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NASA's Gypsum Find Clear Evidence There Was Water On Mars

First time accepted submitter RCC42 writes "The Opportunity rover has found evidence that liquid water once flowed on Mars, through the discovery of gypsum — a mineral that can only be formed in the presence of water. Though other evidence in the past has suggested highly acidic water on Mars, this is the first evidence for water with a pH suitable for life as we know it."

162 comments

  1. Now we HAVE to go. by Jafafa+Hots · · Score: 5, Funny

    We can no longer ignore the need now to send people to mars to establish a base and mine. With this discovery, Mars can now supply all of our drywall needs for the next several centuries!

    --
    This space available.
    1. Re:Now we HAVE to go. by Ukab+the+Great · · Score: 4, Funny

      But if NASA finds a sentient life lathe-and-plaster-using civilization underground, such advanced technology as drywall would violate the prime directive.

    2. Re:Now we HAVE to go. by amicusNYCL · · Score: 1

      The dunes in the White Sands national monument can supposedly supply the construction industry with drywall for 1000 years.

      --
      "Our two-party system is like a bowl of shit looking at itself in a mirror." - Lewis Black
    3. Re:Now we HAVE to go. by Bill+Currie · · Score: 1

      Forget the prime directive. It's all about suppression by making sure the advanced stay ahead of the primitive.

      --

      Bill - aka taniwha
      --
      Leave others their otherness. -- Aratak

    4. Re:Now we HAVE to go. by Anonymous Coward · · Score: 0

      Yea but the damn environmentalists had their puppets make it a damned national monument!

    5. Re:Now we HAVE to go. by Nethemas+the+Great · · Score: 0, Offtopic

      Dammit! Why can't NASA get their story right. It's neither helium, nor water, nor methane, nor diamonds or gold that they need to be finding. We need oil dammit, oil! If we ever want to see a human set foot on Mars we to find massive underground oceans of light sweet crude!

      --
      Two of my imaginary friends reproduced once ... with negative results.
    6. Re:Now we HAVE to go. by Anonymous Coward · · Score: 0

      I hope it turns out like Red Faction. "Die Miner!"

    7. Re:Now we HAVE to go. by mark_elf · · Score: 1, Insightful

      That's good thinking. We need need to send people there to mine drywall. I'm with you.

      But seriously, these bots are doing so well we should just stop thinking about sending people places like Mars. There's no science in it, it's just a stunt. Unless there's a political reason to spend a truly immense amount of money just showing off (or military of course, in which case it will happen whether or not it's a good idea,) let's concentrate on unmanned missions. If we can afford to spend more, then buy things like the James Web telescope which we learn a lot more from.

    8. Re:Now we HAVE to go. by wierd_w · · Score: 4, Insightful

      If you want oil, go to titan.

      Lakes of liquid ethane.

      Transport cost might be a bit more than you bargained for... what with operating a tanker in orbit of a gas giant and all......

    9. Re:Now we HAVE to go. by Jafafa+Hots · · Score: 1

      We can move Titan here. Just attach a rocket nozzle to it and light a match.

      --
      This space available.
    10. Re:Now we HAVE to go. by ae1294 · · Score: 2

      There is no o2 which is why titan doesn't burst into a huge fireball...

    11. Re:Now we HAVE to go. by Bucky24 · · Score: 1

      Then we need to lace its upper atmosphere with o2 before igniting.

      --
      All the world's a CPU, and all the men and women merely AI agents
    12. Re:Now we HAVE to go. by geekoid · · Score: 4, Interesting

      Humans can do in an hour what would take a robot a month.
      Humans can make judgements.

      There is strong scientific, and techical breakthgrough that send a person to mars will bring.

      And yes, also send robots.

      Send some humans and some backhoe to where we think the deepest water would have been. Dig some bigas ass holes and see what we can find.

      See if there is an evidence of large species about 200 meters down.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    13. Re:Now we HAVE to go. by DarkOx · · Score: 1

      I am not a proponent of space research right now, I kind think we should focus or efforts on more terrestrial matters. That said if were to send someone to Mars or go back the moon for that matter there is some science in it, or at least some engineering advances in it.

      If were to discover a place worth going, the two main problems are where do find enough energy to get your there fast enough. Figuring out exactly what you need to take with you and in what form has a major impact on our selections of solution to the two main problems. Know what we need, and knowing it works would be beneficial.

      The ISS is nothing like the mostly self sustaining colony that would be necessary elsewhere.

      --
      Repeal the 17th Amendment TODAY! Also Please Read http://www.gnu.org/philosophy/right-to-read.html
    14. Re:Now we HAVE to go. by Wyatt+Earp · · Score: 1

      But the US and global drywall market has collapsed, USG just shut the last drywall plant in the US and shuttered it until the economy comes back.

    15. Re:Now we HAVE to go. by Wyatt+Earp · · Score: 1

      Can a human walk around on Mars for days without any extra supplies?

      Advantage rovers.

    16. Re:Now we HAVE to go. by ae1294 · · Score: 1

      Then we need to lace its upper atmosphere with o2 before igniting.

      Sounds dangerous, send congress....

    17. Re:Now we HAVE to go. by confused+one · · Score: 1

      But won't Martian drywall cause corrosion of all the electrical and plumbing systems? Mars is rust red after all...

    18. Re:Now we HAVE to go. by khallow · · Score: 1

      Can a human walk around on Mars for days without any extra supplies?

      Yes. Oh, you mean can the human walk around without carrying what they need? Doesn't matter. Neither can the rover.

      Humans are just another payload with moderately peculiar needs and infrastructure.

    19. Re:Now we HAVE to go. by poly_pusher · · Score: 3, Interesting

      I just can't go along with that idea yet...

      I want to clarify that I can't think of anything more important to our species than the ability to leave this planet indefinitely. What we have learned about our universe and the geological history of this planet is that eventually something will destroy Earth or at least alter it so drastically that it cannot support human life any longer. The big questions are when and how that will happen. Maybe a giant asteroid will hit us, Yellowstone may blow it's top again, or we damage the current ecosystem so badly that Earth becomes inhospitable. So I really want make clear, I am very pro space travel.

      However, that is why we need to be reasonable. We need to gather more information on space in general, test materials that can withstand the extreme conditions in outer space, and research advanced propulsion technologies. This kind of research can be done without human beings physically present. The cost of keeping a sack of meat alive on a 9 month trip to Mars is absurd. If we ever consider spending that much money it should all be spent on research and development until the actual trip to Mars is no longer costly and what is then based on old and reliable technology.

      Besides, if we began planning a trip to Mars right now, by the time the actually went, we would likely have some very sophisticated Rovers. Just imagine what they could do if the whole budget was spent on launching advanced rovers and probes instead of on keeping people alive.

    20. Re:Now we HAVE to go. by Anonymous Coward · · Score: 0

      The issue is that humans require much more useless (in terms of science) load compared to the robot. Beyond the body, the robot only needs power and heat/insulation compared to humans which would need food, water, air, and the tools to do the job which would be on the robot. Add in a transportation ability lest you be stuff within the same area. Also, human must return home unlike robots which requires double the fuel capacity. Basically with humans, you are severely limited due to our current technology costs as there is alot of baggage that we humans need from surviving to the actual tools to do the science. Sending humans costs orders of magnitude higher compare to robots. Add in issues with prolonged missions and really, the scientific data that can be achieve by humans would be small compared to robots if the equivalent was spent.

    21. Re:Now we HAVE to go. by iggymanz · · Score: 3, Informative

      A human would die in two minutes on mars. oh, you mean with TONS of supplies send humans? forget it, robots win.

      The energy requirements alone of a human compared to the robot are fearsome.

    22. Re:Now we HAVE to go. by guruevi · · Score: 2

      The thing is that funding our 'terrestrial matters' (by which I think you mean the wars and bailouts) has been way more expensive than all the space programs put together.

      Space research creates jobs and develops new technology which we can then use to further an economy. War simply destroys economies to profit a very limited set of people (those selling weapons and weapon systems) and although they also develop new technology, they do so by cannibalizing actual scientific research.

      The terrestrial matters we know about and we can handle them, we just need people knowledgeable and honest enough to do so. The extra-terrestrial we don't know about but finding out about them is highly educational and progresses us much further than politicizing science and reverting back to teaching creation. That IS what will happen if we cancelled all space research a decade ago - the religious nut cases would say that we haven't found any evidence of extraterrestrial life or even planets like ours therefore $deity must have put us here. In the last decade we have found evidence of not only planets like ours but whole solar systems like ours and also "extraterrestrial" life in our own backyard (the arsenic-based life form and what seems like remnants of early seeds on passing meteors).

      --
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    23. Re:Now we HAVE to go. by fezzzz · · Score: 1

      I'm sure Americans will be searching for another planet since they are not willing to put in the slightest effort to save the environment or help reduce climate change. They did not ratifying the Kyoto Protocoll and now they start the COP17 meeting in South Africa with "we're not doing anything unless China and other countries does something as well".

      China has around 4 times the population of America. How can America say anything before China exceeds their emissions by 4 times. I was hoping America would pitch up and bring some leadership with them, for instance "we understand the problem and we will start by bringing down our emissions by 10% in the next five years, no matter what the rest of the world does", but instead all we get is selfishness. I am tired of America and glad that their relative wealth to the rest of the world is falling as this is getting old.

    24. Re:Now we HAVE to go. by shutdown+-p+now · · Score: 3, Insightful

      Frontiers need powerful symbols, and robots don't cut it. Pragmaticism is all well and good, but you need to keep people motivated enough - and not just scientists, but all those others that feed and clothe them.

    25. Re:Now we HAVE to go. by khallow · · Score: 1

      The issue is that humans require much more useless (in terms of science) load compared to the robot. Beyond the body, the robot only needs power and heat/insulation compared to humans which would need food, water, air, and the tools to do the job which would be on the robot.

      Even so, humans would be more efficient per kg of payload than the robot would. The problem is simply a higher ante for manned missions than unmanned ones. And current efforts on Mars simply aren't considered valuable enough to commit humans to it yet.

    26. Re:Now we HAVE to go. by Kjella · · Score: 2

      Even so, humans would be more efficient per kg of payload than the robot would.

      I don't think you understand how much payload would be required just to support the human. For example, the rovers produce less than 1 kWh/day even under optimal conditions. In the winter when it goes into hibernation it's down to less than 0.16 kWh/day or like a 6-7 watt light bulb. How many solar panels do you think it'd take to sustain a human?

      --
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    27. Re:Now we HAVE to go. by Ogive17 · · Score: 1

      Solar panel? No, we send them with a small nuclear reactor to sustain them.

      --
      "Action without philosophy is a lethal weapon; philosophy without action is worthless."
    28. Re:Now we HAVE to go. by khallow · · Score: 3, Interesting

      I don't think you understand how much payload would be required just to support the human.

      It's on the order of 100 tonnes per person. More mass will be needed overall, but that can be obtained from Mars itself.

      For example, the rovers produce less than 1 kWh/day even under optimal conditions. In the winter when it goes into hibernation it's down to less than 0.16 kWh/day or like a 6-7 watt light bulb. How many solar panels do you think it'd take to sustain a human?

      3000 calories (for a very active person) corresponds to roughly 3.5 kWh/day. The Mars Science Laboratory (MSL) generates about 2.5 kWh/day and about 45-50 kWh/day of waste heat (with half life of almost 90 years).

      Of course, that does measure true power needs. Humans need to eat food, so there's going to be at least a factor of ten loss converting solar energy into food energy. On the plus side, that can be grown, say in a pressurized greenhouse or LED-lit chamber. Near Earth the rule of thumb is 100 square meters (m2) is roughly enough garden space to feed an active person (and ten times what area you need to provide oxygen for that person). Since solar intensity drops by half, then one would expect that 200 m2 probably would do on Mars and there are various tricks to drop that amount.

      In exchange for this modest mass and complexity, you get the best tools, that humanity has to offer. Keep in mind also that unmanned probes such as the MSL are increasing in power consumption. So it's reasonable to expect that power consumption over the mission will enter the range where manned missions are viable. And that's an additional aspect of manned missions. They have a lot of synergies with high power missions.

    29. Re:Now we HAVE to go. by Grizzley9 · · Score: 1

      Said in jest, but actually if we did find that Mars was full of oil, it actually wouldn't help very much. At the rate we are doubling our usage of it and energy in general, adding just a little bit more would not last us very long. Arithmatic, Population, and Energy by Dr. Albert Bartlet It's a video from the early 00's but it gets the point across with simple math.

    30. Re:Now we HAVE to go. by Kjella · · Score: 1

      The Mars Science Laboratory (MSL) generates about 2.5 kWh/day and about 45-50 kWh/day of waste heat (with half life of almost 90 years).

      Yes, curling up next to a lump of plutonium will make you warm but you'll also die from radiation poisoning. Add in shielding and a closed loop heat transfer system and it doesn't look nearly as good. Works damn well on robotic probes though.

      --
      Live today, because you never know what tomorrow brings
    31. Re:Now we HAVE to go. by thejaq · · Score: 1

      It looks fine if you eliminate the silly thermoelectric generator and slap on one of these asc engines, http://gltrs.grc.nasa.gov/reports/2006/TM-2006-214243.pdf. They get you somewhere on the order of 6-8x more power for the same Pu. Plenty of room to play.

    32. Re:Now we HAVE to go. by khallow · · Score: 1

      Yes, curling up next to a lump of plutonium will make you warm but you'll also die from radiation poisoning. Add in shielding and a closed loop heat transfer system and it doesn't look nearly as good. Works damn well on robotic probes though.

      This isn't a serious issue since one can, as you say, shield the plutonium and so on. A serious issue is that radiothermal generators (RTGs) are limited in size and power output because one has to dissipate the heat from them. That's why small fission plants or solar power arrays are studied instead.

    33. Re:Now we HAVE to go. by mrchaotica · · Score: 1

      "Lathe and plaster?" That sounds messy, what with the spinning machine flinging plaster everywhere...

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    34. Re:Now we HAVE to go. by Em+Adespoton · · Score: 1

      So... was this the result of some "get rich quick" scheme by a Martian drywall factory run amok?

      Could it happen here too?

      Wait until they discover that all of the free-flowing water on Mars turned to gypsum due to some bioengineered algae that mutated to escape replication control....

  2. Re:In other news... by Jibekn · · Score: 1, Funny

    I would have pegged them as flat earthers myself.

  3. Re:NASA's Gypsum? by medraut · · Score: 3

    Although read in context it makes sense. Oh well, mod me down appropriately! o_O

  4. Re:We Can Find Water on MARS, But NO Nukes in Iran by maweki · · Score: 4, Funny

    Because they, contrary to the martians, shoot down unmanned probes.

  5. Re:NASA's Gypsum? by Nemesisghost · · Score: 1

    So, wait. We don't have diplomatic relations with Iran, but they can still file patents with us? Wow, now I know the patent system is messed up.

  6. Re:In other news... by Jeremiah+Cornelius · · Score: 5, Insightful

    Persians first calculated the volume of the earth, as a sphere. Invented spherical trigonometry, and all kinds of things.

    Remember all that "Arab scientists and mathematicians" kind of talk? None of 'em were arabs. Mostly Persians, with roots in Khorasan - writing in Arabic.

    It's similar to calling Sir Issac Newton a "Latin Physicist" because of the language used in the "Principia".

    --
    "Flyin' in just a sweet place,
    Never been known to fail..."
  7. Re:frost piss by flaming+error · · Score: 2, Funny

    If that's the water source, I'd hate to meet the bladder's owner.

  8. Re:We Can Find Water on MARS, But NO Nukes in Iran by Jeremiah+Cornelius · · Score: 1

    Actually, I think they commandeered the command-and-control protocols.

    Much more sophisticated than Martians.

    --
    "Flyin' in just a sweet place,
    Never been known to fail..."
  9. Re:In other news... by MightyMartian · · Score: 4, Insightful

    Needless to say, Iranian civilization ain't what it used to be. This a major oil producing country with such inept leadership that they have to import refined fuels.

    Persia's high point was a long time ago.

    --
    The world's burning. Moped Jesus spotted on I50. Details at 11.
  10. Re:In other news... by geekoid · · Score: 1

    but what about the last 500 years?

    The first recorded person to ever fly was from that part of the country, but that was like 600 years ago.

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  11. Re:In other news... by arthurpaliden · · Score: 1

    No that would be the Greeks.

  12. Re:In other news... by Deus.1.01 · · Score: 4, Funny

    "It's similar to calling Sir Issac Newton a "Latin Physicist" because of the language used in the "Principia"."

    Ofcourse not.... he was a Persian physicist.

    --
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  13. how much gypsum? by wierd_w · · Score: 5, Interesting

    Are we talking just a thin crust, or are we talking "gypsum quarry" size formations?

    The reason I ask, is gypsum contains absurd quantities of chemically bound water. If mars has a higher calcium ion concentration than earth does, and had liquid oceans at one time, it is possible that with the carbon dioxide rich atmosphere and lack of techtonic plate movement that a sizable quantity of the ocean turned into "concrete" rather than drying up.

    This would mean that much of the light elements (hydrogen, etc) might have escaped being blown off the atmosphere.

    This is exciting news for science fiction writers that like to dream about terraforming. Creating techtonic activity would create the geomagnetic dynamo the planet needs, and as a consequence of the subduction and volcanism, huge quantities of water vapor would be expelled as a volcanic gas.

    About all the planet would need would be ammonia, for the missing nitrogen. (Doesn't titan have an ammonia atmosphere? Wink, nudge.)

    This does not mean the planet would go from lifeless desert to habitable overnight, as the gasses relased would be inhospitable to oxygen dependant life like us, but certain algae species like chlorella can survive in 100% C02 atmospheric concentrations as long as there is sunlight and water. Chlorella is well researched, fully genomically sequenced, and already has engineered varieties. A strain intended to rapidly convert the atmosphere to something a bit less toxic would actually be fairly plausible.

    1. Re:how much gypsum? by Anonymous Coward · · Score: 0

      Total Recall much?

    2. Re:how much gypsum? by Anonymous Coward · · Score: 0

      So... Total Recall right?

    3. Re:how much gypsum? by wierd_w · · Score: 4, Interesting

      That was ice.

      This is gypsum. Gypsum is a conretion type sedimentary rock made of chemically bound water, sulfuric acid, and calcium ions.

      http://en.wikipedia.org/wiki/Gypsum

      It is mostly water by molar weight.

      If heated in the mantle by subduction, it would thermally decompose into calcium sulfide, sulfur dioxide, and copoius quantities of water vapor.

      If the formations are "large, and very deep", it would go a long way toward explaining where the ocean went.

    4. Re:how much gypsum? by SoupGuru · · Score: 3, Funny

      Creating techtonic activity would create the geomagnetic dynamo the planet needs

      I'll get right on that and let you know when I'm done so we can move to the next phase.

      --
      What doesn't kill you only delays the inevitable
    5. Re:how much gypsum? by Sponge+Bath · · Score: 1

      About all the planet would need would be ammonia, for the missing nitrogen. (Doesn't titan have an ammonia atmosphere? Wink, nudge.)

      You're right. There is a sci-fi novel in that: The domestic house apes of planet Earth fling Titan into Mars. Alien microbes from Titan thrive and mutate on Mars, becoming toxic to hoo-mahns. "Oh, Jordy Verrill, you lunkhead!"

    6. Re:how much gypsum? by wierd_w · · Score: 1

      If you want to get all touchy feely in your story, this would be a good constructive use of the earth's nuclear arsenal.

      Plate techtonics is at least partially powered by radiological decay.

    7. Re:how much gypsum? by ulzeraj · · Score: 1

      Correct me if I'm wrong but without a magnetic field or a massive gravity, a planet can't prevent the hydrogen atoms from escaping its orbit. Both Mars and Venus can't have water because of that factor.

    8. Re:how much gypsum? by History's+Coming+To · · Score: 1

      Easy - you fire Titan into it. A few small nudges at the right time in its orbit (think large nukes just outside the atmosphere) and you can get Saturn to slingshot it, pick up an assist from Jupiter, and fall all the way in. Easy, provides the nitrogen needed, and should only take a few thousands or tens of thousands of years. Get back to me when we're ready to build nuclear bomb factories on Titan and I'll talk you through the rest ;)

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    9. Re:how much gypsum? by History's+Coming+To · · Score: 1

      Add Titan's mass, however....

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    10. Re:how much gypsum? by wierd_w · · Score: 2

      Reading comprehension is difficult for you?

      I said, the atmosphere would inflat *as a consequence* of plate techtonics.

      Plate techtonics is the result of convection currents in the mantle.

      Convection currents in the mantle create the geomagnetic dynamo.

      The geomagnetic dynamo creates a strong planetary magnetic field.

      Venus lacks a magnetic field because it is too hot at the planet's surface to have mantle convection. This, no dynamo, and no magnetic field.

      Mars lacks sufficient mantle heat to power mantle convection, thus no dynamo, and no magnetic field.

      Kickstarting the mantle of mars with some gogo juice (in the form of nasty dirty radioactive waste and or dirty uranium bombs in specific locations) would kickstart mantle activity, causing convection, causing techtonic activity, which releases the chemically bound water vapor, at the same time that the magnetic field appears.

    11. Re:how much gypsum? by wierd_w · · Score: 4, Interesting

      Titan is larger than earth's moon.

      Mars is smaller than the Earth.

      Smashing titan into mars would probably be a bad thing. (A very, very bad thing. That is, unless you like the idea of scattering huge chunks of rock into space. See for instance, the collision simulation for the hypothesis of earth's moon's formation.)

      Better, would be to go ahead and nudge the moon out of saturns orbit, have it fall into the inner solar system, sweep a wide orbit of the sun, then fall into orbit around mars.

      Best to use a trans ecliptic orbit, so that the falling body doesn't adversely effect other inner planet systems.

      Once in martian orbit, titan's gravity would cause intense mantle heating of the red planet. It is likely that titan's atmosphere would freeze and snow out after being dislodged from saturn's orbit, due to the lack of tidal heating while it transits. Mars' tidal forces would be miniscule compared to saturn's, though being in the habitable zone might be enough to heat titan enough to reconstitute the atmosphere. Unknown.

      It is concievable that with both bodies in the habitable zone, that both bodies could be actively terraformed.

      Titan is presumed to have a silicate core, and not an iron nickle one like mars and earth. This means that it wouldn't disrupt the new martian magnetosphere. (Like our moon doesn't.)

      Mars is more massive than titan, and if the atmosphere reconstitutes, mars might just rip it off titan.

    12. Re:how much gypsum? by Anonymous Coward · · Score: 0

      It is a vein of gypsum -- i.e. a fracture/crack in the surrounding rock that was filled with it. This normally happens when fluids containing a soluble mineral precipitate out in the fracture as they are flowing along. It's not very big -- a few metres long, a few cm wide -- but it's probably not the only one. I suspect that as they drive around they'll find more.

      Also, it's spelled "tectonic". Starting plate tectonics in any meaningful sense would be much more difficult than it would be to just dump the water you need onto the planet. That's a big enough job all on its own without figuring out how to heat the crust on a planetary scale.

    13. Re:how much gypsum? by wierd_w · · Score: 1

      Nasa says there are dunes of the stuff. So, more than just a crusty deposition in rock fissures.

      http://science.nasa.gov/science-news/science-at-nasa/2011/08dec_slamdunk/

      As for starting tectonic activity, a large orbiting body would start it up through mechanical heating. We are talking science fiction here.

    14. Re:how much gypsum? by Gothmolly · · Score: 1

      In the end you still have insufficient gravity and no magnetic field to protect the atmosphere you're trying to create. Solar wind would blow it away (again).

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    15. Re:how much gypsum? by wierd_w · · Score: 1

      Uhm... initiating tectonic activity would *create* a planetary magnetic field.

      http://en.wikipedia.org/wiki/Dynamo_theory

      As the article mentions, it is the convection currents in the conductive material (molten mantle and outer core, in the case of earth) which produces the magnetic field.

      You cannot have tectonic activity without subsurface convection, so initiating tectonic activities on mars defacto implies a magnetic field will become extant.

      I have explained this 3 times now.

    16. Re:how much gypsum? by ceoyoyo · · Score: 2

      Titan's atmosphere is mostly nitrogen. That would definitely not be frozen at Mars' distance from the sun. It extends a long way out though, so if you put Titan in a reasonably close orbit of Mars it would probably transfer. And there's lots of it.

      Moving the planet might be tricky though. Especially if you don't want to lose the atmosphere.

    17. Re:how much gypsum? by Zargg · · Score: 3, Informative

      Are we talking just a thin crust, or are we talking "gypsum quarry" size formations?

      FTA: The gypsum vein — which scientists spotted last month and nicknamed “Homestake” — is approximately the width of a human thumb and about 16 to 20 inches long.

    18. Re:how much gypsum? by wierd_w · · Score: 2

      Also FTA: there are large dunes of gypsum sand in the north polar region. Possibly there are large pans of the stuff, as the sand had to come from somewhere.

    19. Re:how much gypsum? by Anonymous Coward · · Score: 0

      Better, would be to go ahead and nudge the moon out of saturns orbit, have it fall into the inner solar system, sweep a wide orbit of the sun, then fall into orbit around mars.

      God may or may not play dice with the universe, but I fear when humanity plays billards with the planets.

      Stephen Baxter wrote about an Earth-ending collision in The Light of Other Days which killed off an initially evolved terrestrial intelligence who created super microbes to survive and eventually produce us instead of a space program.

      I propose a modernization. Have them be facing Climate Change. This need not be creature-centric with Climate Change deniers and fanatics. Perhaps the Earth's dynamo was shutting off and they wanted to restart it with a similar plan to this Move Titan? Let them try to move a large moon from another planet into Earth's orbit. And let them screw it up. Instant Moon-generating (and extinction-level) event.

      Just so you could go 'told you so' when the human effort goes down the tubes. Suddenly there is an asteroid belt between Jupiter and Earth full of a lot of freshly launched ex-Martian rocks. Lots of easy mining. Really bad for property values around Olympus Mons, though.

    20. Re:how much gypsum? by Whiteox · · Score: 1

      I reckon there'll be huge limestone caves.

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    21. Re:how much gypsum? by Hadlock · · Score: 1

      If you have the capability to move a planet out of orbit and in the direction you want it to go, given the distance you should be able to fine tune the impact velocity using gravity wells and orbit corrections to somewhere just above zero, and then just wait for Titan to uh, melt, on to Mars over a period of centuries.

      --
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    22. Re:how much gypsum? by d3ac0n · · Score: 1

      Well, the difficulties of boring large holes down the center of Mars to set off the nukes (doesn't do any good to nuke the surface) do present some problems.

      And the fact that Mars simply isn't massive enough to maintain that heat anyway. Any terraforming project would be short-term as Mars would rapidly cool off and lose it's magnetic shield again.

      Seems to me Mars needs to bulk up. Using spacecraft to redirect large asteroids into Mars using the gravity tractor method seems like a viable way to bulk it up AND heat it up. I don't know if there is enough material available in the Asteroid belt, but it seems more technically feasible than drilling into Mars' core to set nukes off.

      I just did a bit of quick math, and if you add the estimated total mass of the Asteroid belt to the estimated mass of Mars you get 6.4505 x (10^23) kilograms. The Earth is 5.9736 x (10 ^24) kilograms. Mars would still be smaller than Earth, but would be far more likely to be able to hold onto a magnetic field (after it cooled from the bombardment, of course.)

      --
      Official Heretic from the "Church of Global Warming". Proven right thanks to whistle blowers. AGW = Flat Earth Theory
    23. Re:how much gypsum? by d3ac0n · · Score: 1

      Just took the time to put in in decimal, just for fun.

      In decimal notation that's as follows.

      Mars + all of the Asteroid belt = 645,050,000,000,000,000,000,000 kg

      Earth = 5,973,600,000,000,000,000,000,000 kg

      So, as you can see, Mars would still be an order of magnitude smaller than Earth, but MUCH larger than it's current size if we were to bombard it with the contents of the asteroid belt, thus adding to it's mass.

      --
      Official Heretic from the "Church of Global Warming". Proven right thanks to whistle blowers. AGW = Flat Earth Theory
    24. Re:how much gypsum? by d3ac0n · · Score: 1

      Well, yes. IF you could somehow find a way to move an entire moon from the grip of a gas giant, then you could do that.

      Some of us prefer more practical methods though. Simply bulking Mars up with a steady diet of asteroids gravity tractor-ed in using robotic spacecraft is a FAR more practical method, and much less risky than attempting to move a body as large as Titan all in one go.

      Not only do you get the advantage of adding all those variable content asteroids, the bombardment heats the planet up creating that lovely convection dynamo AND you up the planet's mass by several trillion kg, thus enabling it to hold onto that heat and maintain the dynamo for much longer.

      I prefer my Sci-fi to have an edge of the possible.

      --
      Official Heretic from the "Church of Global Warming". Proven right thanks to whistle blowers. AGW = Flat Earth Theory
    25. Re:how much gypsum? by Anonymous Coward · · Score: 0

      It's "tectonics" you retard.

    26. Re:how much gypsum? by almitchell · · Score: 1

      Titan is presumed to have a silicate core, and not an iron nickle one like mars and earth. This means that it wouldn't disrupt the new martian magnetosphere. (Like our moon doesn't.)

      ...aaaaand that's where you lost me. I may just have to go have a good cry over my Merriam-Webster Reference Desk Set.

      --
      Baseless self confidence kills more people each year than bathtubs.
  14. Re:NASA's Gypsum? by roc97007 · · Score: 1

    Just NOW?

    --
    Oliver's law of assumed responsibility: If you're seen fixing it, you will be blamed for breaking it.
  15. Obligatory XKCD by JStyle · · Score: 4, Funny

    Now that it has finally done a good job, it can come home....

    XKCD

  16. As thing go... by no-body · · Score: 2

    runaway climate, oceans evaporate, a couple of million years later some beings from Europe may wonder, was there ever life on this desert planet? And a next round of silliness starts again.

    1. Re:As thing go... by Anne_Nonymous · · Score: 3, Funny

      Beings from Europe? Don't be ridiculous.

    2. Re:As thing go... by no-body · · Score: 1

      Beings from Europe? Don't be ridiculous.

      Duh! Educate yourself about Jupiter's moons or watch Space Odysee 2001 -> Arthur C. Clarke, he was right on

    3. Re:As thing go... by Anonymous Coward · · Score: 0

      Perhaps you meant Europa? Educating the edumacated...

    4. Re:As thing go... by nedlohs · · Score: 1

      Maybe if you knew what the name actually was you would get the joke too?

    5. Re:As thing go... by TapeCutter · · Score: 4, Informative

      Educate yourself about Jupiter's moons

      Not sure about the GP but when I went to school Europe was a continent and Europa was a Jovian moon. OTOH, geopolitical maps have changed quite a bit since the 1960's, so maybe France is obiting Jupiter now.

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    6. Re:As thing go... by badboy_tw2002 · · Score: 1

      Right on what? I can't stand the suspense! I guess your spell-checker has an auto "prevent further embarrassment" feature. Is that a firefox plugin?

    7. Re:As thing go... by Kjella · · Score: 4, Informative

      English makes the distinction, a lot of other countries don't. Norway, Sweden, Denmark, Germany at least "europa" is both the continent and the Jovian moon. Took me a long time to get used to writing Europe...

      --
      Live today, because you never know what tomorrow brings
    8. Re:As thing go... by Anonymous Coward · · Score: 0

      Norway, Sweden, Denmark, Germany

      In short: all North Germanic and most West Germanic languages spell both the continent and the moon as Europa.

    9. Re:As thing go... by marcosdumay · · Score: 1

      Add there the latin languages.

    10. Re:As thing go... by mrchaotica · · Score: 1

      But the O.P. did the reverse: even if "Europa" can refer to both the continent and the moon, using "Europe" to refer to the moon is still wrong.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

  17. Drywall industry rejoices! by Pvt_Waldo · · Score: 2

    Now I know who will be the first to industrialize Mars.

    1. Re:Drywall industry rejoices! by Anonymous Coward · · Score: 0

      China?

    2. Re:Drywall industry rejoices! by WindBourne · · Score: 1

      Only if there is lead, mercury and other poisons to be able to include on western sales.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    3. Re:Drywall industry rejoices! by Steauengeglase · · Score: 1

      Dan Halen Sheet Rock International?

  18. Re:We Can Find Water on MARS, But NO Nukes in Iran by Anonymous Coward · · Score: 4, Funny

    Actually, I think the drone malfunctioned, went into auto-mode and landed itself in the desert. Then an Iranian sheepherder stumbled across it and called authorities.

    It's an open question why Iranians graze sheep in the desert though...

  19. Re:In other news... by geekoid · · Score: 1

    Yes, but it was dead. By studying the Greeks they made some significant mathematical and science discoveries.

    The Romans, OTOH, ignored the Greeks and we got a dark ages for their lack of effort.

    --
    The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  20. True orgins of Isaac Newton by syousef · · Score: 0

    Persians first calculated the volume of the earth, as a sphere. Invented spherical trigonometry, and all kinds of things.

    Remember all that "Arab scientists and mathematicians" kind of talk? None of 'em were arabs. Mostly Persians, with roots in Khorasan - writing in Arabic.

    It's similar to calling Sir Issac Newton a "Latin Physicist" because of the language used in the "Principia".

    Let me guess. Isaac Newton was actually Persian?

    --
    These posts express my own personal views, not those of my employer
    1. Re:True orgins of Isaac Newton by Jeremiah+Cornelius · · Score: 1

      Nope. :-)

      He was the second coming of Jesus Christ and a Chemyst.

      --
      "Flyin' in just a sweet place,
      Never been known to fail..."
  21. Re:We Can Find Water on MARS, But NO Nukes in Iran by GumphMaster · · Score: 1

    It's an open question why Iranians graze sheep in the desert though...

    Perhaps, as is the case in Australia, grazing sheep on marginal land causes the desert. Once you have broken the environment you get to keep the pieces.

    --
    Patent litigation: A doctrine of Mutually Assured Destruction... in which everyone seems willing to push the button
  22. Re:NASA's Gypsum? by hguorbray · · Score: 1

    That's OK -I first read it as NASA's Gypsies. Gypsies on Mars.

    -I'm just sayin'

  23. Re:We Can Find Water on MARS, But NO Nukes in Iran by cdrguru · · Score: 1

    It is probably simpler to think that they jammed the control frequency/frequencies in such a manner that the device went into a failure mode. Most UAV things these days have some sort of auto-landing logic that will land it safely if it loses communication. I would think a military aircraft would tolerate loss of communications for a bit longer than other civilian devices but then the question is self-destruct or land? At some point without communications you can't just fly in a straight line.

    I seriously doubt these things have enough internal navigation to return to base autonomously. My guess is that during testing the self-destruct option was ruled out as being too brash. Ooops.

    I would suspect there might be a rush order for autonomously return to base capabilities on these things. The one problem there of course is how do you integrate a returning (autonomous) drone into the flight control pattern at a busy air base. No, I think that problem is going to have to be solved with shutting everything down until the thing lands if you can't regain control over it.

    Did the Iranians take over the control frequency and start flying it? I can't imagine even with an unencrypted control channel that this would be possible.

  24. link with minimal info by Anonymous Coward · · Score: 0

    http://marsrovers.jpl.nasa.gov/newsroom/pressreleases/20111207a.html

    minimal info here, apparently they can measure the ratio of Ca/SO4

    I havn't seen any one describe why gypsum can't be formed in the absence of water - isn't it supposed to be hard to proove a negative ?

    1. Re:link with minimal info by TapeCutter · · Score: 1

      I havn't seen any one describe why gypsum can't be formed in the absence of water

      Gypsum is like beer, in that it's main ingredient is water. Can beer form without water?

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    2. Re:link with minimal info by hoggoth · · Score: 2

      Wait, did someone say they found beer on Mars? Very interesting development...

      --
      - For the complete works of Shakespeare: cat /dev/random (may take some time)
    3. Re:link with minimal info by amliebsch · · Score: 1

      Those rovers are hoarding all the Martian Jabra Water for themselves!

      --
      If you don't know where you are going, you will wind up somewhere else.
  25. Re:NASA's Gypsum? by RCC42 · · Score: 1

    Although read in context it makes sense. Oh well, mod me down appropriately! o_O

    I submitted the original article with the headline as "Water found on Mars" but the editor must have thought that was too sensationalistic and easily understood so he edited out the clarify for our benefit. :D

  26. If there's no water on Mars... by alexo · · Score: 0

    I just know who's going to be blamed for it.

  27. Re:We Can Find Water on MARS, But NO Nukes in Iran by Wyatt+Earp · · Score: 0

    Does the US have robots driving around Iran? Nope, there you go.

  28. Re:We Can Find Water on MARS, But NO Nukes in Iran by Wyatt+Earp · · Score: 2

    Actually, drones like the Predator, Heron, Reaper and Global Hawk need to be manually landed by a local pilot, not sure about the Beast of Kandahar.

  29. Humming by Anonymous Coward · · Score: 0

    A tune comes to mind, what was that band called, "Flotsam and Gypsum"

    1. Re: Humming by Whiteox · · Score: 1

      Flotsam Jetsam - Thrash Metal

      --
      Don't be apathetic. Procrastinate!
  30. Re:In other news... by DigiShaman · · Score: 1

    To be fair, I'm sure they will eventually reach their zenith again. But, it wont be tomorrow or the day after. That's for sure.

    --
    Life is not for the lazy.
  31. Re:We Can Find Water on MARS, But NO Nukes in Iran by Anonymous Coward · · Score: 1

    Clearly you haven't talked to any martians.

    The one that speaks to me at night tells me they shoot down unmanned NASA probes twice a week, mostly on weekends when they're not busy planning the invasion.

  32. That's nice by GameboyRMH · · Score: 1

    ...but there are a couple of moons with surfaces covered in water ice RIGHT NOW which have liquid water below the surface, so it's hard for me to get excited.

    --
    "When information is power, privacy is freedom" - Jah-Wren Ryel
  33. Re:We Can Find Water on MARS, But NO Nukes in Iran by Beardo+the+Bearded · · Score: 2

    If I built a drone like that, I'd have it track the jamming signal and "land" on it at full speed.

    --

    ---
    ECHELON is a government program to find words like bomb, jihad, plutonium, assassinate, and anarchy.
  34. prevous water is not news by peter303 · · Score: 1

    Plenty of evidence from orbiters and rovers. Current liquid water underground is unknown. The new fluid channels seen now and then could be something other than water.

  35. Re:In other news... by Hentes · · Score: 1

    Eratosthenes begs to differ.

  36. Re:In other news... by Jeremiah+Cornelius · · Score: 3

    "Greeks" themselves were often native inhabitants of Asia Minor, Levant and Lower Egypt.

    They were also the recipients, refiners and extenders of numerical sciences with origin in Babylon and the Indus.

    --
    "Flyin' in just a sweet place,
    Never been known to fail..."
  37. Re:We Can Find Water on MARS, But NO Nukes in Iran by Jeremiah+Cornelius · · Score: 1

    "This is not the false positive you are looking for..."

    --
    "Flyin' in just a sweet place,
    Never been known to fail..."
  38. Re:We Can Find Water on MARS, But NO Nukes in Iran by TapeCutter · · Score: 1

    Perhaps, as is the case in Australia, grazing sheep on marginal land causes the desert

    I think you mean goats, which are not a big problem in Oz. Goats eat everything, sheep only do that if they are starving and even then there are a lot of plants they won't touch. That plus the fact the Aussie desert has not grown significantly since the introduction of domesticated animals.

    --
    And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
  39. Gymsum is proof of water, but water itself Isn't by Zamphatta · · Score: 0

    I'd really like to think, with all the tax dollars going to NASA, that they would consider water (in the form of snow & ice) on the poles as evidence of water.

  40. Re:We Can Find Water on MARS, But NO Nukes in Iran by inflex · · Score: 3, Insightful

    From what I recall, goats will eat a lot of things but they -way- they eat the grass tends to leave it intact/alive to resprout, however sheep gnaw it down so far that it kills the grass.

  41. Re:We Can Find Water on MARS, But NO Nukes in Iran by khallow · · Score: 3, Insightful

    It's interesting how fast some of us forget the facts.

    First, in the release of Department of State memos a year ago, we read of several countries and the US government admitting to a belief in the existence of an Iranian nuclear program. While the Arab Spring protests have probably trumped it for a time, it's worth noting that several countries, particularly Saudi Arabia, viewed Iran's nuclear program as their most pressing foreign policy issue (over such things as Israel). They have since threatened to develop their own nuclear weapons.

    ' Second, Iran does indeed have sites that were built at great expense to resist known conventional weapons of the time. No civilian nuclear program justifies this expense.

    The International Atomic Energy Agency has assembled evidence of an Iranian nuclear weapons program.

    Finally, we have acts of sabotage and murder against Iranian infrastructure and personnel associated with this program. Nobody does that for a hobby. An easy counter for Iran would be to throw open its entire nuclear infrastructure to show it wasn't developing nuclear weapons. Didn't happen.

    I can't help but notice that the story you link to has a mind-numbing fallacy in it. Because the US had overflown Iranian space for four years and the author chooses to ignore the copious evidence in support of the existence of an Iranian nuclear weapons program, then Iran doesn't have a nuclear weapons program. That makes no sense.

  42. Re:We Can Find Water on MARS, But NO Nukes in Iran by mug+funky · · Score: 0

    [citation needed]

    sheep eat the grass so close to the ground that it doesn't grow back. this means the soil eventually becomes loose and blows away. hence, desert.

    we should just farm kangaroos out there. they taste better and are much better adapted.

  43. Re:Gymsum is proof of water, but water itself Isn' by khallow · · Score: 1

    The trick is they're studying possible existence of liquid water on the surface at some point in Mars's history. Ice and water vapor are not liquid water.

  44. Re:In other news... by Deus.1.01 · · Score: 1

    We call it Arabic/Islamic *placeholder* because thats how we historically categorize civilization, by naming it after the Language or Religion that defined the culture.

    And after 650 Persia was part of that civilization.

    Those and Jews, Christians, Zoroastrians, etc, etc.

      I'd say the reason why the middle east had almost an millenia of brilliance, was the writing leftover by the greeks through the romans, good trade and exhange of ideas with China and India(well...conquered them in the 1300-1400 hundred, but hey Mughul architecture is kinda neat) and the fact that the rulers did not discriminate(much) against other religions, which allows for a fairly peaceful and stable society.

    Its not that i think Islam and Muhammed is the best thing since sliced bread, and its the 21 century, notion such as civilization is irrelevant, and enlightenment era thinkers are WAAAY more preferable, but how they generally handled non-belivers back in the day made them much more preferable then some other Abrahamic religion of that era that shall remain nameless.

    --
    My -1 Troll is actually a +1 funny. And my -1 flame is actually a +1 insightfull.
  45. Re:In other news... by Deus.1.01 · · Score: 1

    Their rampant slavery ravaged Africa though, just so that is said.

    --
    My -1 Troll is actually a +1 funny. And my -1 flame is actually a +1 insightfull.
  46. Re:Gymsum is proof of water, but water itself Isn' by UnknownSoldier · · Score: 1

    So how did the ice and water vapor get there then ... ?

  47. Re:We Can Find Water on MARS, But NO Nukes in Iran by Jeremiah+Cornelius · · Score: 2, Insightful

    The US Dept of State is a reliable authority of unbiased information and analysis? Christ! You would have made a great Soviet.

    Then there's the entirely discredited IAEA citing. This was shredded. Another sad, neocon fairytale, like Condoleeza's "Smoking Gun in the form of a Mushroom Cloud". Oh. She represents an example of State Dept. accuracy and lack of bias, herself.

    Unbelievable, fabricated distortions about "nano-diamonds"

    Why do you witchhunt Iran, when the US is the evil regime that kills children with airborne shrapnel, on an almost daily basis?

    he IAEA Confirms My Nanodiamond Analysis

    Dennis Ross Fired Over IAEA Dud

    No International Action Following IAEA Report

    --
    "Flyin' in just a sweet place,
    Never been known to fail..."
  48. Water Is Proof Of Water, Before Gypsum Is by Zamphatta · · Score: 1

    But since the ice/snow on the poles grows & shrinks, then it's already clear that the water exists in non-frozen form at times. To think that it goes from solid to gas instantly without any liquid form on a planet (Mars) where there are dry river beds, would be logical. (NASA's known about the river beds since 1998 at least, see http://apod.nasa.gov/apod/ap980205.html)

    1. Re:Water Is Proof Of Water, Before Gypsum Is by khallow · · Score: 4, Insightful

      To think that it goes from solid to gas instantly without any liquid form on a planet (Mars) where there are dry river beds, would be logical.

      Pressure is below the triple point for water so yes, it is logical to not expect liquid water on the exposed surface of Mars under current conditions. Ice directly sublimates to vapor.

      It's also worth noting that liquid water could be a temporary thing maybe occurring when ice is melted by volcanism. That could result in the river valleys without any long term water presence. Or the river valley could be caused by flowing carbon dioxide. The presence of gypsum supports the your explanation that flowing water was present on Mars at some point.

  49. Only in water? Are you sure? by Anonymous Coward · · Score: 0

    In other news, scientists discover a way to form gypsum in the absence of water.

  50. Re:In other news... by kanto · · Score: 1

    Needless to say, Iranian civilization ain't what it used to be. This a major oil producing country with such inept leadership that they have to import refined fuels.

    Persia's high point was a long time ago.

    That's really a sad comment since it's only been 60 years that they were a democracy. If someone didn't see that link coming then they should stop watching the bobbleheads on Fox.

  51. Clarification on Khorasan by astropirate · · Score: 5, Informative

    "Mostly Persians, with roots in Khorasan - writing in Arabic."
    "Needless to say, Iranian civilization ain't what it used to be."

    I just have to clarify that Khorasan is modern day Afghanistan - It was part it was part of Persia, but it isn't Iran. Its a common misconception that people think Persia = Iran. In fact, Persia included (at a time) a lot, of not all of, the ---istan countries. "istan" is the the Persian suffix meaning land. Analogous to Scotland, Ireland.

    My two cents of knowledge.. free for you!

  52. Re:We Can Find Water on MARS, But NO Nukes in Iran by Anonymous Coward · · Score: 0

    RTB is the easiest thing for them to do and it doesn't take much "horsepower" to accomplish. Usually just return to a point and orbit and wait for GC to take over.

  53. Re:We Can Find Water on MARS, But NO Nukes in Iran by khallow · · Score: 1, Offtopic

    The US Dept of State is a reliable authority of unbiased information and analysis? Christ! You would have made a great Soviet.

    They weren't trying to be. That's one of the strengths of these memos.

    Then there's the entirely discredited IAEA citing. This was shredded. Another sad, neocon fairytale, like Condoleeza's "Smoking Gun in the form of a Mushroom Cloud". Oh. She represents an example of State Dept. accuracy and lack of bias, herself.

    Discredited by whom? I won't take such claims seriously unless I can evaluate the merit of the claim.

  54. Re:Gymsum is proof of water, but water itself Isn' by khallow · · Score: 1

    Probably deposited on dust as ice in the early Solar System and chemically bonded with various minerals. When Mars formed, some water came with it. The rest was driven away by the Sun.

  55. Jeremiah's hotbutton issue by Anonymous Coward · · Score: 0

    You're starting to sound like a lobbyist for Iran with these silly fanboi comments.

    I recommend sitting the next few Iran stories out.

  56. Offsite backup Re:Now we HAVE to go. by Anonymous Coward · · Score: 2, Insightful

    I kind think we should focus or efforts on more terrestrial matters

    Uh... offsite backup IS a terrestrial matter.

  57. Martians imported their drywall by Anonymous Coward · · Score: 0

    Even martians had illegal aliens put up their (gypsum) drywall.

  58. Re:In other news... by shutdown+-p+now · · Score: 1

    We call it Arabic/Islamic *placeholder* because thats how we historically categorize civilization, by naming it after the Language or Religion that defined the culture.

    And after 650 Persia was part of that civilization.

    Those and Jews, Christians, Zoroastrians, etc, etc.

    As an approach, that's way too crude - similar to lumping together, say, Christian Levant and Europe, circa 500 CE, on the grounds of common religion.

    True, Persia converted to Islam, but their civilization and culture was always very much separate from Arabs and Ottomans.

  59. Re:In other news... by Whiteox · · Score: 1

    The Persians WERE the Zoroastrians, and from India for that matter. The last vestiges of the religion is now the Parsi in India. Islam destroyed it.

    --
    Don't be apathetic. Procrastinate!
  60. Re:We Can Find Water on MARS, But NO Nukes in Iran by cthulhu11 · · Score: 1

    Sheep are natural grazers; goats are more browsers and will preferentially eat something taller/other than grass. I was always amazed to see them rear up on their spindly hind legs to pull leaves off blackberry canes, apparently immune to the thorns even without upper teeth.

  61. Re:In other news... by sempir · · Score: 1

    Those Zoroastrians were cool Dudes, they could write with a sword! And they invented wide brimmed hats and face masks so you didn'd get your face burnt off cos it's seriously hot in Zorostan.

    --
    A closed mouth gathers no foot.
  62. Re:Only in water? Are you sure? by RockDoctor · · Score: 2

    In other news, scientists discover a way to form gypsum in the absence of water.

    It's not common that you'll hear a scientist say this, but that is absolutely impossible. It is not possible under any circumstances to form gypsum in the absence of water. Gypsum is a hydrous mineral - it contains molecules of water in it's structure. So even if you took Feynman's trip "all the way to the bottom", you'd have to assemble an atom of sulphur and four of oxygen (to form a sulphate ion ; you're in Feynman territory, so don't worry about the charges), then add a calcium atom (now you can balance the charges if you want. Then add two molecules of water (as atoms, or as molecules ; it doesn't matter) ... and that's your anhydrous synthesis contaminated with substantial quantities of water. And we haven't even got onto getting the ions and molecules into the right positions (also essential for it to be "gypsum" and not anything other mineral).

    Where is my packet of dehydrated DHMO? Ah, under the tin of tartan paint.

    --
    Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  63. Re:We Can Find Water on MARS, But NO Nukes in Iran by AmbushBug · · Score: 1

    Discredited by whom? I won't take such claims seriously unless I can evaluate the merit of the claim.

    I don't know if the IAEA report is "entirely discredited" but there definitely seems to be some sketchy stuff in there. I found this link that talks about it (and I didn't really look very hard).

  64. I knew this... by hesaigo999ca · · Score: 1

    I knew this planet supported life before ours a long time ago.... however, I have to ask, why try to worry about that planet instead of fixing ours....which leads me to believe that they know something will happen (asteroid, apocalypse, etc...) and are thinking about "we have no choice so lets start that journey now...."

    I am concerned about this planet that is now dead (almost) and we are trying to reterraform it to sustain life..... it died for a reason (too close to the sun?)...

    1. Re:I knew this... by Erikderzweite · · Score: 1

      Do we really trying to terraform mars? Who are "we" then?

      If there are active plans in motion to terraform mars, I personally welcome them. A planet is somewhat fragile against a cosmic disaster, it's better to have two in order to be able to preserve live in the universe (unless otherwise proven, I tend to assume that we are the only bearers of life theoretically capable of achieving the level of technology to survive without our home planet).

      It would be nice to have a plan B and even nicer to be able to go and establish new ecosystem somewhere else, just in case.

    2. Re:I knew this... by hesaigo999ca · · Score: 1

      Yes, we are never happy enough with destroying one world, we should destroy many....

  65. Re:We Can Find Water on MARS, But NO Nukes in Iran by khallow · · Score: 1

    IMHO, what's sketchy about it is that Iran hasn't provided evidence to the contrary. Nuclear proliferation should not fall under presumption of innocence.

  66. Re:We Can Find Water on MARS, But NO Nukes in Iran by Jafafa+Hots · · Score: 2

    How do you provide evidence that you're not doing something?
    How do you provide evidence that something someone claims exists in fact doesn't?

    Logic fail.

    Even if they COULD, you still wouldn't believe it because clearly this evidence of non-existence couldn't be trusted, coming from Iranians, who you KNOW are just hiding something. When they deny it, it confirms it!

    Set the skin-seeking missiles to brown! (Leave them on default, IOW.)

    --
    This space available.
  67. Re:We Can Find Water on MARS, But NO Nukes in Iran by khallow · · Score: 1

    How do you provide evidence that you're not doing something?

    Allow inspectors free reign. Don't pull Saddam Hussein shell games.

    Even if they COULD, you still wouldn't believe it because clearly this evidence of non-existence couldn't be trusted, coming from Iranians

    It wouldn't be coming from Iranians.

    Set the skin-seeking missiles to brown!

    Because only racists would believe, based merely on the copious evidence out there, that Iran has a nuclear weapons program.

  68. Re:We Can Find Water on MARS, But NO Nukes in Iran by Jafafa+Hots · · Score: 2

    If Iran decides to accuse the US of stocking illegal weapons (chemical whatever) and cites the lack of proof that we don't as proof that suspicion is warranted, do they get to say that our denial is not enough, that we must allow in outside inspectors?

    We in the US seem to demand an awful lot from others that we would rather kill than submit to ourselves.

    Kill Japanese for the torture of waterboarding, then waterboard others ourselves and say it's not torture.

    Overthrow democratically-elected leaders and install dictators instead because we want to? We've done that.

    Oh yeah, like in Iran for example.

    Gosh, I wonder why, after that, they don't feel like climbing in our laps like puppies and learning to respond to our commands?

    We have nukes. Iraq didn't have nukes. Iran trying to get them might be the only way they can protect themselves from an unprovoked US attack.

    I am anti-nuclear, but I don't think we, as the only power ever to nuke cities, and still with the largest arsenal, have much moral standing to act like the global good guys.

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  69. Re:We Can Find Water on MARS, But NO Nukes in Iran by khallow · · Score: 1

    If Iran decides to accuse the US of stocking illegal weapons (chemical whatever) and cites the lack of proof that we don't as proof that suspicion is warranted, do they get to say that our denial is not enough, that we must allow in outside inspectors?

    So? If they got enough of the rest of the world on board, then they could force the issue. For for whatever reason, the rest of the world isn't terribly interested in whether the US has chemical (or for that matter nuclear) weapons. Europe isn't stockpiling thousands of nuclear warheads because of the US, for example. Russia has been cutting back on its stash for at least a couple of decades.

    I am anti-nuclear, but I don't think we, as the only power ever to nuke cities, and still with the largest arsenal, have much moral standing to act like the global good guys.

    I don't base it on moral standing, but rather because someone has to. There's a remarkable lack of interest among other parties to do so. A lot of people are concerned about Iran's nuclear program, but not concerned enough to do anything about it themselves. The ones that are are doing things like sabotage and assassinations behind the scenes.

    The actions of a government like Iran (and like the democratically elected Iranian kleptocracy which got knocked over way back when) aren't governed by morality either. Iran doesn't have the moral standing to obtain nuclear weapons, but it tries anyway. Similarly, the Iran of back then, didn't have the moral standing to grab the property of the Anglo-Iranian Oil Company, no matter how sleazy that company happened to be.

    Actions (or the lack thereof) of countries don't have moral standing, they have consequences. I agree that there are valid arguments against the US acting as global policeman on those grounds.

  70. Re:We Can Find Water on MARS, But NO Nukes in Iran by Jafafa+Hots · · Score: 1

    "Similarly, the Iran of back then, didn't have the moral standing to grab the property of the Anglo-Iranian Oil Company, no matter how sleazy that company happened to be."

    Really? REALLY?
    Come on now.

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  71. Re:We Can Find Water on MARS, But NO Nukes in Iran by khallow · · Score: 1

    Really? REALLY?
    Come on now.

    Do you disagree or are you just making noise?

    Given that the consequences of that theft, excuse me, returning oil fields to their rightful owners, was a half century of a mix of tyranny and ignorant theocracy, where's that "moral standing" now?