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Scientist Says Potential Signs of Ancient Life in Mars Rover Photos

mpicpp notes that a scientist named Nora Noffke says she thinks that the Curiosity rover may have found fossils on Mars. "Time and time again, as we carefully scrutinize the amazing high-resolution imagery flowing to Earth from NASA’s Mars rover Curiosity, we see weird things etched in Martian rocks. Most of the time our brains are playing tricks on us. At other times, however, those familiar rocky features can be interpreted as processes that also occur on Earth. Now, in a paper published in the journal Astrobiology, a geobiologist has related structures photographed by Curiosity of Martian sedimentary rock with structures on Earth that are known to be created by microbial lifeforms."

77 of 142 comments (clear)

  1. No coverup by meglon · · Score: 4, Funny

    It's not that NASA is covering up the proof of life they've found on Mars, it's just that they're trying to figure out who this Kilroy guy was before publishing the report.

    --
    Fascism: An authoritarian and nationalistic right-wing system of government and social organization. See also: NAZI's
    1. Re:No coverup by Deadstick · · Score: 4, Funny

      You're showing your age.

      OK, OK, I'm off your lawn.

    2. Re:No coverup by meglon · · Score: 1

      ....and... you noticed.... gotcha!

      --
      Fascism: An authoritarian and nationalistic right-wing system of government and social organization. See also: NAZI's
    3. Re: No coverup by Aighearach · · Score: 4, Interesting

      I read a whole book on that experiment, and the long and short of it is that it was inconclusive, there are known non-organic circumstances that could be responsible, and the follow-up experiments were cut because budgets were cut and it was heavy, and most of the scientists on the teams were skeptical.

      There has always been a minority at NASA making those claims in the open. I think it is clear that it is not something "obvious" that NASA "didn't want to admit," but something that some smart people passionately believe, and the majority of their equally smart peers believe is inconclusive.

      Jumping more quickly to a conclusion isn't more science-y, even if you're really excited by the preliminary data and certain interpretations.

    4. Re:No coverup by meglon · · Score: 1

      Oh yeh, you're right... here's another.

      http://images.somethingawful.c...

      --
      Fascism: An authoritarian and nationalistic right-wing system of government and social organization. See also: NAZI's
    5. Re: No coverup by Tablizer · · Score: 1

      and the follow-up [lab] experiments were cut because budgets were cut

      It's odd how they spend billions to send probes (Viking wasn't cheap), but then skimp on follow-up Earth-lab science.

    6. Re: No coverup by Aighearach · · Score: 1

      and the follow-up [lab] experiments were cut because budgets were cut

      It's odd how they spend billions to send probes (Viking wasn't cheap), but then skimp on follow-up Earth-lab science.

      It isn't odd at all, building probes advances multi-use engineering, and lab science doesn't. Not in a comparable way, anyhow.

  2. Slashdot today. by MozeeToby · · Score: 5, Insightful

    Seven comments in, so far there's 4 jokes, 2 anti-us spam/trolls, and 1 crank. Quality discussion there.

    1. Re:Slashdot today. by cyberchondriac · · Score: 1

      The trolls are taking over. I read it can even be a source of income now, from certain countries. Oh yay. Now, jokes, OTOH.. a little levity never hurts.

      --

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    2. Re: Slashdot today. by DustinB · · Score: 3, Insightful

      More like koala tea. All jokes aside, this place isn't what it used to be... :( at its best its usually just inward bickering back and forth instead of discussion. I don't know where to go for insighful intelligent discussion online anymore.

    3. Re:Slashdot today. by Iamthecheese · · Score: 1

      Who would pay someone to troll in a "microbial life on mars" story? I think it's more likely an attempt to test Slashdot's spam filters.

      --
      If video games influenced behavior the Pac Man generation would be eating pills and running away from their problems.
    4. Re:Slashdot today. by TWX · · Score: 1

      Seven comments in, so far there's 4 jokes, 2 anti-us spam/trolls, and 1 crank. Quality discussion there.

      So, kind of like it's always been then, but with less goatse...

      Which of your categories is your post?

      --
      Do not look into laser with remaining eye.
    5. Re:Slashdot today. by iONiUM · · Score: 3, Insightful

      To be fair, there have been many of these "we think we may have found life / ancient life / we have a big announcement" type things out of NASA in the last few years, none of which had "conclusive" (or at least, relatively so) evidence of life.

      It's getting to the point where there's nothing really to discuss until they stop releasing these meta-statements, and actually give a real "we fucking found life FOR SURE" statement.

    6. Re:Slashdot today. by XxtraLarGe · · Score: 1

      Which of your categories is your post?

      If I had mod points? -1, Redundant. ;-)

      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    7. Re:Slashdot today. by CauseBy · · Score: 1

      What site am I supposed to move on to? I'm not interested in Reddit. Where are the nerds today?

    8. Re: Slashdot today. by rwa2 · · Score: 1

      That's so Meta, Even This Acroynm

      (since, there oddly isn't any other obligatory xkcd about life on Mars)
      http://xkcd.com/917/

    9. Re:Slashdot today. by Junta · · Score: 1

      Some men just want to watch the world burn.

      --
      XML is like violence. If it doesn't solve the problem, use more.
    10. Re: Slashdot today. by OzPeter · · Score: 5, Informative

      I don't know where to go for insighful intelligent discussion online anymore.

      I go to Ars. They actually have journalists who write stuff and all. And you get the tech news 2-3 days before here.

      --
      I am Slashdot. Are you Slashdot as well?
    11. Re:Slashdot today. by MozeeToby · · Score: 4, Funny

      What spam filters?

    12. Re:Slashdot today. by disambiguated · · Score: 2

      That's the price you pay for a completely uncensored forum. Personally, I think it's worth it.

      You don't have to read at -1 (you should if you're modding, though.) You're also reading and posting when the story has literally been here 15 minutes. There hasn't been time for quality discussion and moderation to take place (jokes, trolls and spam begin immediately, real discussion takes longer.)

    13. Re:Slashdot today. by Dimwit · · Score: 1

      This isn't even my first Slashdot account, my old one dates from 1998 or 1999.

      When I first got on Slashdot, there was meaningful, technical discussion. A good number of actual experts in scientific and technical fields were present. Yeah there were always trolls and people racing to have the initial comment, but I feel like the entire tone of Slashdot has changed. You rarely get technical experts on here anymore, the trolls are just as prevalant if not more, and the entire readership has turned a lot to the reactionary right - scientific stores get inundated with "but that's socialism!" comments. There's even a fair amount of junk science in the comments now.

      I read Slashdot now solely for the headlines, primarily because I never got the hang of Reddit. The comment section has been basically useless for a while now.

      --
      ...but it's being eaten...by some...Linux or something...
    14. Re:Slashdot today. by steelfood · · Score: 1, Informative

      It's published in the Journal of Astrobiology. That's the field that thinks they'll find star-devouring organisms.

      --
      "If a nation expects to be ignorant and free in a state of civilization, it expects what never was and never will be."
    15. Re:Slashdot today. by solios · · Score: 3, Insightful

      ...and unlike reddit, a registered and logged in user can dock "funny" posts and read at a threshold that scrubs most of the jokers and trolls under the rug. A feature slashdot has had since the 90s; a feature the rest of the internet still hasn't implemented.

    16. Re:Slashdot today. by Tablizer · · Score: 1

      Seven comments in, so far there's 4 jokes, 2 anti-us spam/trolls, and 1 crank. Quality discussion there.

      Launch a rover to Slashdot to see if you can find any intelligent life.

    17. Re: Slashdot today. by smaddox · · Score: 2

      Thanks for the suggestion. I've been looking for somewhere better than slashdot. However, the lack of threaded comments is abhorrent.

    18. Re:Slashdot today. by horm · · Score: 1

      Where they've always been: IRC.

    19. Re:Slashdot today. by WillAffleckUW · · Score: 1

      Seven comments in, so far there's 4 jokes, 2 anti-us spam/trolls, and 1 crank. Quality discussion there.

      You assume they are cranks, and not terrorists who hate cartoonists.

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      -- Tigger warning: This post may contain tiggers! --
    20. Re:Slashdot today. by farble1670 · · Score: 2

      Nora Noffke, a geobiologist at Old Dominion University in Virginia...

      NASA didn't release anything.

    21. Re:Slashdot today. by user+flynn · · Score: 1

      Seven comments in, so far there's 4 jokes, 2 anti-us spam/trolls, and 1 crank. Quality discussion there.

      Thanks for the informative, insightful post. You've really opened my eyes.

        Without your well written expose I'd still be reading those posts. I think we're all fortunate to have someone here with your hard hitting journalistic instincts.

      --
      In the distance you hear an ominous moo.
    22. Re:Slashdot today. by jandersen · · Score: 1

      To be fair, there have been many of these "we think we may have found life / ancient life / we have a big announcement" type things out of NASA in the last few years, none of which had "conclusive" (or at least, relatively so) evidence of life.

      I read, long ago, that scientifcally speaking, there is no conclusive proof of life on Earth either; probably tongue-in-cheek, but with a core of truth. There is that well-rehearsed and widely misunderstood phrase, that 'correlation is not causation'; what that actually means is that scientifc data will only ever indicate a correlation - the causation part belongs entirely in theory, in the interpretation of that correlation. Same here - the pictures show something that would most likely be created by life, had it been on Earth; if we are right in assuming that life on Mars would have been of a similar nature as on Earth, then this is quite good evidence.

      However, on Earth life is everywhere, making that interpretation very likely; since we haven't yet convinced ourselves that life ever existed on Mars, we have to be much more wary of leaping to the same conclusion. Perhaps in the future, if we find ourselves convinced that life has been abundant once on Mars, we will look back at much of our evidence and say 'of course this is created by living organisms'.

      It's getting to the point where there's nothing really to discuss until they stop releasing these meta-statements, and actually give a real "we fucking found life FOR SURE" statement.

      Well, this is what it is like to follow the science taking place; lots of frustratingly vague results until finally the weight of evidence is great enough. Just look at water on Mars: a decade ago it was like that - every bit of evidence that water has been there once was quickly refuted, but now the consensus is that there was water once. Just give it some time and enjoy the popcorn.

    23. Re:Slashdot today. by Aighearach · · Score: 1

      Seven comments in, so far there's 4 jokes, 2 anti-us spam/trolls, and 1 crank. Quality discussion there.

      What were you expecting, petrified Martian grits?

      There isn't much that is substantive to discuss at this point. It looks exciting, but it is all very inconclusive. The paper from TFA is just a thought experiment by somebody in a field unrelated to Mars exploration, describing what features that look the same on Earth would be caused by. The difference in gravity alone makes it an absurdity to take it as science, though it is a great exercise and valuable brainstorming.

    24. Re:Slashdot today. by RockDoctor · · Score: 1

      You're also reading and posting when the story has literally been here 15 minutes. There hasn't been time for quality discussion and moderation to take place

      It'd take at least 5 minutes to read the first FA, and another couple to be fairly sure that the second FA was a complete regurgitation of the first. (Actually, I'm not really sure which was first and which second ; there may be a third FA.) So you're only allowing about 7 minutes to think of an analysis and compose a reply.

      It took me pretty much that long to compose this low-content message.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  3. Re:ok... by TWX · · Score: 1

    3. He's from Russia or the easter block countries. They tend to eat this sort of thing up.

    I guess the populace just likes eggin' them on...

    --
    Do not look into laser with remaining eye.
  4. Re:ok... by Charliemopps · · Score: 1

    bad experiment. I was mostly wrong.. She's German though, I'm claiming a "Close enough" on that one. And the pictures are blurry and not helpful as well. 1.5 out of 3 ain't bad! She does have a real degree though... doh!

  5. Time for some leaps and not baby steps by DumbSwede · · Score: 4, Interesting

    Is it me, or does NASA seem scared to get the answer to the question of is/was there life on Mars?

    Viking’s results where ambiguous, so we decided – NO LIFE – no need to go back for over 20 years.

    Now we keep getting a tantalizing clues, but can’t seem to summon the will to do a sample return mission. How many sample return missions could the ISS fund? How much more scientific benefit would come from it?

    Of late it almost seems like they want to be just shy of proof so they can keep sending missions, getting us just a little closer each time. Call it the scientific method if you want but as Keynes once observed – “in the long run, we are all dead.” How-about we get our answers now?

    How about a real microscope on one of these missions, not just a camera that can take photos of small objects -- far short of microbial dimensions – then insist on calling it a microscopic imager. Hell, why not a scanning electron microscope?

    Most of the scientific instrumentation seems focused on geology. Granted Geology can be related to conditions for life and is important knowledge, but what we really want answered is “is there life on Mars”, not “is there hematite on Mars?” OK hematite on Mars is cool to know, but not as important I think as the Life question.

    When we went to the moon there were far less important questions to be answered. How can the Life question on Mars be so much less a priority when it could up-end so much of scientific knowledge?

    One final note to my rant – is it possible there is some drag on this quest so as to maintain the status quo and not upset a largely religious electorate that assumes we should only be concerned with our fate here on Earth as their God has decreed, or that life on Mars might raise too many uncomfortable questions.

    1. Re:Time for some leaps and not baby steps by Charliemopps · · Score: 5, Insightful

      No, they're afraid of saying there is life and being wrong. They're not currently saying there isn't life, they're saying they dont know either way. They have no definitive proof.

      I don't think anyone in the scientific community has any doubts that there was life there at one time. It's just a matter of proving it. I think it's rather likely that there still is life on mars and it will be surprisingly similar to microbial life hear on earth. I suspect our two planets have been inoculating each other for a very very long time.

    2. Re:Time for some leaps and not baby steps by XxtraLarGe · · Score: 1

      Now we keep getting a tantalizing clues, but canâ(TM)t seem to summon the will to do a sample return mission. How many sample return missions could the ISS fund? How much more scientific benefit would come from it?

      Serious question. What would be the scientific benefit coming from discovering that there might have been life on Mars at some point?

      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    3. Re:Time for some leaps and not baby steps by MozeeToby · · Score: 1

      That's like asking "what's the benefit of studying this mold growing on my oranges?". No one knows. Maybe nothing. Maybe everything.

    4. Re:Time for some leaps and not baby steps by mjm1231 · · Score: 1

      Serious question. What would be the scientific benefit coming from discovering that there might have been life on Mars at some point?

      Presumably, this discovery would be accompanied by some facts about the nature of the organisms that lived on Mars, not just the fact that they existed. It's hard to know what uses you can put knowledge to when you don't even know what that knowledge is yet.

      --
      Ideology: A tool used primarily to avoid the bother of thinking.
    5. Re:Time for some leaps and not baby steps by k6mfw · · Score: 1

      Is it me, or does NASA seem scared to get the answer to the question of is/was there life on Mars?

      Viking’s results where ambiguous, so we decided – NO LIFE – no need to go back for over 20 years.

      that's why mission is not to ask "is there life?" Because if answer is no, then we ain't going back for another 20 years because that is exactly what happened with Viking (ok maybe I'm stretching it). But then I feel the same way, the next big thing is even a bigger rover. I've read stories of the "Mars Mafia" to keep the money rolling to JPL by continuing easy missions (but talk to people that worked on Curiosity and they'll tell you it is ***NOT*** easy). Now for a mission of big leap is a Europa lander and submarine (imagine it taking pictures of the little fishies if any).

      --
      mfwright@batnet.com
    6. Re:Time for some leaps and not baby steps by Noah+Haders · · Score: 1

      probably nothing.

    7. Re:Time for some leaps and not baby steps by k6mfw · · Score: 1

      Presumably, this discovery would be accompanied by some facts about the nature of the organisms that lived on Mars,

      I recall one of those 1950s sci-fi comics of a manned Mars mission exploring surface, come across some ruins (there really was a cilivization here millions of years ago). They find this one place of various apparatus and documents (maybe it's advanced mathematical studies and high technology). After spending some time analyzing the numbers, one concludes it doesn't seem much more than just a balance sheet for a business. Another finds the equipment some kind of holographic projector and manages to get it operating. It shows a person under attack by a tenacle monster. Among other evidence they realize Martians were very humanoid and what they stumbled on was a movie theatre with feature film, "Invasion From The Third Planet."

      --
      mfwright@batnet.com
    8. Re:Time for some leaps and not baby steps by Kingofearth · · Score: 1

      If we could compare it with life on Earth we would have a much better understanding of the nature of life itself in the universe. Do we share genetics with life on Mars, showing that life can travel between planets on asteroids? If life developed independently on Mars it would show that life could be very common in the universe, and it would be very interesting to see if life on Mars uses the same methods as life on Earth.

    9. Re:Time for some leaps and not baby steps by werepants · · Score: 2

      The followup to Curiosity currently in the works is a sample return mission. The long absence after Viking is a bit strange and I'm not sure what the explanation is, but I think the Mars rovers were a bit of a fluke, actually. This wasn't some big, orchestrated "find life on Mars" initiative. At the time of Spirit and Opportunity getting developed it was more like NASA was hurting from a couple of high profile failures and needed something doable enough that it was almost a sure thing, and compelling enough to capture the public imagination. Hence, a pair of cute little robots that could send back nice pictures and look for water along the way.

      The whole rover architecture is only obvious in hindsight - sure it has benefits, but before Spirit and Opportunity there was really only one successful science mission using a wheeled platform, which was a Soviet deal where they landed something and drove it to get a distance record, and collected minimal science. If you look at things in that light, you have the initial rover mission that has something attainable for that architecture (try to find evidence of water visually and using spectral analysis instruments) and pretty safe (small, cheap, enough so that you can afford an entire redundant rover). Then, you find that things worked really damn well, so you work your way up to Sojourner, which was also a remarkable success, although they have still been hampered by low mass budget and solar panel degradation. Then, develop a whole new architecture for a pretty massive platform, Curiosity, which can afford a lot more instrumentation and really explore some things in depth, get rid of the solar panel problem, and get into the kind of mass category you would need for something like sample return.

      So yes, in hindsight, knowing that rovers are really badass on Mars, you could have skipped a step or two and jumped straight to sample return. However, not knowing whether it would work (and not having this grand vision from the beginning that seems so obvious now), this iterative process has worked pretty well I think.

      As well, the first people they sent to the moon were geologists, and the principal investigators for Mars missions have been geologists, because all there really is to look at are rocks. Plus, if you want to find signs of something that has been there before, you again would want something between a paleontologist and a geologist (the fields are closely related), and not a chemist or biologist, except for niche cases. Geology is really all about detective work, trying to piece together the past, which is exactly the discipline you want here.

    10. Re:Time for some leaps and not baby steps by TapeCutter · · Score: 2

      Extraordinary claims require extraordinary evidence, there is still plenty of room for reasonable doubt. The focus on geology is how they will find past life, dig up a chunk of Martian coal (plants), iron ore nodules (anaerobic microbes) limestone (plankton sea shells), quartz (sponge fossils), etc, and you have your extraordinary evidence. If there is microbial life on Mars today the geology experiments have shown it's very unlikely to be found on the surface. If there was life on the surface in the past it didn't last long enough to put down the scale of geology we find on Earth.

      Seasonal variations in methane plumes are the strongest evidence for extant life on Mars but whatever produces the methane is deep underground where there's enough soil pressure to allow liquid water to exist. Current technology can't reach the source so it's still possible that the plumes are just unusual geologic phenomena with no life involved

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    11. Re:Time for some leaps and not baby steps by l0n3s0m3phr34k · · Score: 2

      Mars ain't the kind of place you raise your kids. And a return sample mission is far more difficult than I think you grasp. This isn't some comet where we can just swing into the dust trail, and even that almost failed when it landed back here. Just designing and building the return rocket is incredibly difficult and far beyond anything we've ever done. Per Zubrin, it's right at Mars_ve = 5.00 km/s ==> 11185 mph. The escape velocity of Mars is 5017 m/s, Earth's is around 11,000 m/s. So for a return mission we would have to land both a rover AND a rather large rocket to get a sample back. We've landed ONE probe there in a fashion that MIGHT be able to also land a return rocket (the sky crane). Looking over the web real quick I don't see any complete mission designs for a return mission from Mars that have all these calculations. Our current crop of rockets couldn't delivery the needed payloads in one trip, we haven't yet got a system for precision landing (for multiple trips, ie one to land the lander, another to land a return rocket) to guarantee that the multiple landings will actually end up close enough to each other...more than a coup[le of clicks apart and the rover will never make it back to the return rocket as even Spirit only moves a few feet a day.

      Basically, we have to wait on SpaceX to perfect the Grasshopper, or something similar. Their getting close, and no one else is even really working on such a system. We'll also need something like the SSL or Falcon 9 Heavy to get it all there, neither of which are actually flying yet. But, at least someone is working on it and actually testing launches now, all the tech is coming together. In the next few years everything should come together for this though.

    12. Re:Time for some leaps and not baby steps by TapeCutter · · Score: 1

      What would be the scientific benefit coming from discovering...[XYZ]

      The scientific benefit is the discovery itself, whether it has any social/commercial benefits is a different question.

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    13. Re:Time for some leaps and not baby steps by AthanasiusKircher · · Score: 1

      I don't think anyone in the scientific community has any doubts that there was life there at one time. It's just a matter of proving it.

      I certainly hope you're wrong in this statement. Otherwise, it implies the "scientific community" is no better than a bunch of religious wackos when it comes to evaluating evidence.

      There is absolutely no reason to believe one way or another that life should exist or should have existed on Mars. If you go back to the Drake equation, we have only one datapoint regarding the probability of abiogenesis. It could be that life spontaneously appears on every random planet and is even multiple places in our solar system. But, based on current evidence, it could also be that life only appears on 1 in 100 planets that seem to have "good" conditions to us based on our really vague theories about how it happened. Or it could be 1 in 1000 or 1 in a million or 1 in a quadrillion.

      We have one data point. I sincerely hope that there are some in the scientific community who still allow for the possibilty that there may NOT be life on Mars... maybe even not elsewhere in our solar system... maybe even not elsewhere in our galaxy. Maybe it's really common. But we have absolutely no reason to think so at this time, and thus it is really not a very "scientific" attitude to have no "doubts" about it.

    14. Re:Time for some leaps and not baby steps by prisoner-of-enigma · · Score: 1

      So for a return mission we would have to land both a rover AND a rather large rocket to get a sample back.

      Why land a rather large rocket? Seriously. This same discussion took place pre-Apollo when engineers thought we'd have to land a large rocket on the moon. Their solution then would work equally well now. Send a lander with a small, lightweight return-to-orbit ascent stage. Leave the Earth-return rocket in orbit awaiting the ascent stage with sample. Your landing/takeoff mass problem is thus solved.

      Granted, you now need an automated docking procedure in Mars orbit, but I can't imagine that would be more difficult to engineer than trying to orchestrate a much heavier land-and-return rocket setup.

      --
      In the end they will lay their freedom at our feet and say to us, Make us your slaves, but feed us. - Fyodor Dostoyevsky
    15. Re:Time for some leaps and not baby steps by XxtraLarGe · · Score: 1

      Do we share genetics with life on Mars, showing that life can travel between planets on asteroids?

      While I don't put any stock in panspermia, I find it interesting that when the theory is presented, it only seems to travel to Earth, and never from it. It seems to me that it would be more likely that panspermia FROM Earth to Mars would be the more likely scenario if such a thing was possible, and then life on Mars would have existed for a short while in an inhospitable environment.

      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    16. Re:Time for some leaps and not baby steps by farble1670 · · Score: 1

      Is it me, or does NASA seem scared to get the answer to the question of is/was there life on Mars?

      yes, it's you. they put a f'ing car full of sensors and tools on mars. has anyone else even come close to that?

      Hell, why not a scanning electron microscope?

      cost, weight, fragility?

    17. Re:Time for some leaps and not baby steps by Gavagai80 · · Score: 1

      The poster wasn't suggesting abiogenesis though, he was suggesting that Earth and Mars have been exchanging life for billions of years. I don't know if that's the case, but it's certainly easier to investigate the likelihood of than abiogenesis.

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    18. Re:Time for some leaps and not baby steps by Gavagai80 · · Score: 1

      before Spirit and Opportunity there was really only one successful science mission using a wheeled platform, which was a Soviet deal

      You're forgetting the Mars Pathfinder mission. It was a very successful rover mission that paved the way for Spirit and Opportunity.

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    19. Re:Time for some leaps and not baby steps by nicoleb_x · · Score: 1

      The electorate is largely religious, Christian mostly, but that doesn't mean they can't accept life on Mars. I've never heard any mainstream Christian religion say that life on Mars would be blasphemous. However, I have seen some odd statements from Muslims.

    20. Re:Time for some leaps and not baby steps by werepants · · Score: 1

      Actually, that was Sojourner, which I did mention. You are right that I messed up though - I said it was after Spirit and Opportunity, but Sojourner was first as you correctly stated.

    21. Re:Time for some leaps and not baby steps by DigiShaman · · Score: 1

      A single large multi-stage rocket would be more efficient and less complicated. What you propose introduces more complexity and additional physical resources to ensure mission success. For Apollo, the astronauts were there to improvise. You can't really do that with robots and a planet where communication isn't in real-time.

      --
      Life is not for the lazy.
    22. Re:Time for some leaps and not baby steps by Applehu+Akbar · · Score: 1

      The reason for this asymmetry is that Mars has a much smaller gravity well than Earth, so spallation of surface material into space by an incoming meteorite is more likely.

    23. Re:Time for some leaps and not baby steps by Aighearach · · Score: 1

      Mars had conditions suitable for known life in an earlier period than Earth, that is why. The probabilities just add up better for Mars->Earth seeding, with smaller amounts then going back the other direction.

    24. Re:Time for some leaps and not baby steps by fropenn · · Score: 1

      Existence of bacteria or other similar life, millions of years ago on Mars, should not be scary to anyone (or surprising).

    25. Re:Time for some leaps and not baby steps by RockDoctor · · Score: 1

      I suspect our two planets have been inoculating each other for a very very long time.

      While that is certainly not impossible, I don't think that it's at all likely. And it is much, much easier to achieve the transfer from Mars to Earth than vice versa.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    26. Re:Time for some leaps and not baby steps by RockDoctor · · Score: 1

      I don't think anyone in the scientific community has any doubts that there was life there at one time. It's just a matter of proving it.

      I certainly hope you're wrong in this statement.

      Well, speaking as an industrial geologist (not publishing for public consumption, but certainly researching), I can certainly state that this geologist is not convinced that Mars has ever had life. Certainly I'd be fascinated if life were found on Mars, or if evidence of past life on Mars were found. either event would hugely increase the breadth of our knowledge of the range of possibilities available to life. Unless, of course, it turns out to be essentially identical to life on Earth, in which case I'd have to suspect contamination of one environment from the other. But my personal interest in finding that evidence does not extend as far as over interpreting small items of evidence like this. Hell, I remember the 1996 McKay et al ALH84001 paper - I read that one hot off the presses and had a full day to think about it while driving to the other end of the country. Interesting, but not convincing ; and I think that the consensus has solidified around that position.

      Science is a very conservative (small 'c') profession. We require evidence, and better evidence than this.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    27. Re:Time for some leaps and not baby steps by RockDoctor · · Score: 1
      Current mission durations would make that about 2 rounds.

      But bear in mind that you don't get onto this particular gravy train until you're in your early 30s (school, bachelors degree, masters, doctorate, post-doc experience). I went into industry instead of academia and so I'm about 7 years ahead of my classmates who went into academia and about 50% higher in salary.

      You're projecting your money-grubbing motives onto other people. That probably says more about you than it does about them.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  6. Scale? (Microbes are small, their work is bigger) by glassKarma · · Score: 1

    I only had time to skim, but the need to be hear the top is overpowering because of the obvious relevance. What's the scale in these pictures? I know microbes make macro-sized imprints, but certainly the parallels being proposed require some sort of scale? E.g. if the martian structures are hundreds of miles across they are not the same scale, and so are less likely to be from the same cause. Not that I disbelieve, but skepticism in science leads to truer truths.

  7. Re:US CRIMES AGAINST HUMANITY & GLOBAL TERRORI by Noah+Haders · · Score: 2

    This list was compiled before 911, so it does not even include all the destruction and chaos that followed. May this be a good history lesson for you young hipsters brainwashed by your media.

    links or it didn't happen. also the islamists just shot up a newspaper in france, so glass houses my friend.

  8. Re:Scale? (Microbes are small, their work is bigge by Anonymous Coward · · Score: 1

    Most of the identified structures are cm to tens of cm and metre scale. The area in the picture in the web article is maybe couple of metres across. There are scale bars on the pictures in the paper. The microbes are tiny, but (on Earth) they form microbial mat communities that look like a thin carpet of algae and bacteria that covers the sediment surface. This changes the way the sediment surface behaves, and (on Earth) leaves characteristic features that can be recognized as sedimentary structures preserved in the rocks at a macroscopic scale. Putting it another way, you can tell there was once a mat there and affected the sediment surface even if the mat itself doesn't ultimately preserve.

    That being said, I don't buy these supposed examples from Mars at all.

  9. evidence of RECENTLY existing life: on the tires by fikx · · Score: 2

    I keep waiting for the report that evidence of past life was found on the tire treads of one of the rovers.
    "Look: proof life used to exist on Mars! Quick, send a command to rotate the tire some before the press notices we ran over the last one on the planet..."

    --
    AB HOC POSSUM VIDERE DOMUM TUUM
  10. Re:ok... by Anonymous Coward · · Score: 3, Informative

    1. The scientist in question is arguably the foremost in her (admittedly obscure) field, the study of microbial mats and their effects on sediments on Earth. She literally wrote the book on the subject and has a very extensive publication record on it. She is a well-known and respected researcher for this work, although admittedly it's obscure stuff at the interface between sedimentology and paleontology.
    2. The pictures themselves are quite clear and are from the mastcam on the Curiosity rover. They aren't distant blurry pictures with huge blocky pixels and horrible processing, although they could be better. The structures interpreted from them, not so convincing, IMHO, but that has little to do with image resolution issues.
    3. She's an assistant professor at Old Dominion University in Virginia.

    I think you scored a 0.5/3. Don't trust your prejudices.

    That being said, I think the interpretations in the paper aren't correct.

  11. Re:They already knew what was out there 50 years a by farble1670 · · Score: 1

    thanks for the laugh.

    For example the moon is not even grey when looked at from a close distance

    do you think it's possible that things look a little different from the surface of the moon than from 238k miles away?

    but civilian tech is reaching the point of civilian space travel

    thanks to NASA, yes.

    Otherwise they'd have planted flags all over the moon by now

    the moon is an airless, waterless rock. we haven't been back because it's incredibly, incredibly expensive and there's no financial or political reason to do so.

    but they were warned to fuck off that's why they haven't been back to

    i'm confused. we used alien tech to get to the moon, but those same aliens won't even let us land there? why'd they give us the tech in the first place? all the tech that was used in the moon mission is well understood and surpassed by current tech.

    also, what exactly are those aliens doing on the moon? mining moon dust? these aliens can travel between solar systems but they can't find any better world to inhabit than the moon?

  12. it's the Protheans! by Voyager529 · · Score: 1

    I mean, it only makes sense to send a mars rover to scout out Eden Prime. Hopefully, the first person to land there will be able to understand the vision.

  13. Re:US CRIMES AGAINST HUMANITY & GLOBAL TERRORI by Applehu+Akbar · · Score: 1

    Offtopic I know, but after today we're going to double down.

  14. Re:Imagine going back in time 15 years and by Applehu+Akbar · · Score: 1

    It's weird in your timeline, isn't it?

  15. On Earth, unchanged over the last 3 billion years by Trax3001BBS · · Score: 1

    From a link on microbial lifeforms found on Earth http://www.astrobio.net/news-e... "What’s more, MISS have remained unchanged over the last 3 billion years" MISS: microbially-induced sedimentary structure.

    Says a lot really, it's considered a fact you will get cancer (a mutation of the a cell) if you live long enough.

    "A certain irreducible background incidence of cancer is to be expected regardless of circumstances: mutations can never be absolutely avoided, because they are an inescapable consequence of fundamental limitations on the accuracy of DNA replication" http://www.ncbi.nlm.nih.gov/bo...

    3 billion years and little if any mutations in a microbe life or it's off spring.
    “But it also raised the question: why are they so identical?” she adds. “And what does that mean about the organisms that created them?”

  16. Re:Does the Flat Earth Society... by Aighearach · · Score: 1

    Why would Mars need to be flat to be attached to the ceiling? It could be an embedded sphere. Spherical lights are easier to construct, and would cause no obvious impediment to the rotation of the sky.

  17. Re:Ars? Ugh... by penandpaper · · Score: 1

    /. has Bennett Haselton... but this is not the joke your looking for.

  18. Re:They already knew what was out there 50 years a by farble1670 · · Score: 1

    you could at least provide links to a bunch of whacko conspiracy sites? how thoughtless of you.

    do you wonder why your comment was downvoted to a point where no one will ever see it? i guess ALL of the slashdot readers are also idiots or shills huh? when you walk around life thinking everyone else is an idiot or stupid, that's an indication it's time to turn your inspection inward.

    Next you're going to tell me NASA never air brushed their photos.

    i'm going to tell you that there are no domes or shields or man-made structures on the moon. if there were, one of the tens of thousands of amateur astronomers around the world would have seen them. but anyway, i do realize that one of the issues with paranoid delusion is that you are going to explain away any evidence presented to you, so just ignore what i said.

    i'm also going to suggest you have the medication levels checked.

  19. Re:ok... by RockDoctor · · Score: 1
    You can take another point off your score - the pictures may not mean much to you, but as a geologist, I find them quite informative. Not a slam-dunk, but definitely interesting. I could think of several competing interpretations which I'd expect to have been addresses in the full paper (I think I'll be into the local library to see if they stock 'Astrobiology' tomorrow).

    I doubt that the Germans would be as rude about your technical knowledge on the basis of your original address as you are of theirs.

    --
    Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"