Slashdot Mirror


Geothermal Activity on Mars?

An anonymous reader writes "This article on the New Scientist site reports that Mars Odyssey has detected warm spots (20-40 degrees warmer irrespective of sunlight, day or night) in the Hellas basin."

13 of 117 comments (clear)

  1. Question. by sekzscripting · · Score: 4, Funny

    Where do they get the names for the 'geography' of Mars? Sounds like something out of a "gangsta's dictionary".

    1. Re:Question. by blowdart · · Score: 5, Informative

      An Italian astronomer named Schiaparelli created some of the first maps of Mars. He named features using words from biblical and mythical geography. Some of these names, such as Argyre, Hellas, and Tempe, are still used on maps and globes of Mars.

      In the 1970s, after the Mariner spacecraft flew by Mars, many new images were returned to Earth. A special group of people was formed to decide on names for the newly discovered features. This group also set up rules for naming future discoveries.

      All features on Mars have two names. The first is a formal name following the international rules that have been established. The other is a geologic name. The second name tells us what type of geologic feature it is. Following are some examples of geologic names:

      • Mons: mountain
      • Crater: circular depression
      • Dorsum: ridge
      • Planum: plateau or high plain
      • Fossa: depression (hole)
      • Valles: valley

      For example, Olympus Mons is a mountain formed by a volcano. It is named after Mount Olympus in Greece. Sometimes the name order is reversed. For example, in Valles Marineris, the geologic name comes first. Valles Marineris is a valley named after the Mariner spacecraft that first flew by Mars.

      Anyone can submit a name for a specific feature on Mars! The group meets once each year to consider appropriate names. If you would like to suggest a name for a feature on Mars, send your suggestion to the U.S. Geological Survey, Branch of Astrogeology, Room 409, 2255 N. Gemini Drive, Flagstaff, AZ 86001.

      Rules for Naming Martian Features

      Large craters are named after deceased scientists who have contributed to the study of Mars.

      • Gusev (Maturei M., 1826-1866, Russian astronomer)
      • Lowell (Percival, 1855-1916, American astronomer)

      Small craters are named for villages and towns of the world with populations less than 100,000.

      • Aspen (Town in Colorado, USA)
      • Bira (Town in Russia)
      • Isil (Town in Spain)
      • Jama (Town in Tunisia)
      • Kakori (Town in India)

      Large valleys are named for the word used for Mars in various languages of the world.

      • Ares Vallis (word for Mars in Greek)
      • Mangala Valles (word for Mars in Sanskrit)
      • Marte Vallis (word for Mars in Spanish)
      • Mawrth Vallis (word for Mars in Welsh)
      • Nirgal Vallis (word for Mars in Babylonian)
      • Tiu Vallis (word for Mars in Old English)

      Small valleys are named for classical or modern names of rivers.

      • Indus Vallis (river in Pakistan)
      • Naktong Vallis (river in Korea)
      • Warrego Valles (river in Australia)

      All other features retain the names given by Schiaparelli or Antoniadi, another Italian astronomer.

      • Amazonis Planitia (classical name)
      • Libya Mons (classical name)
      • Olympus Mons (classical name)

      Rules for Naming Craters

      Naming rules exist for most features on planets, moons, and asteroids. The following are the regulations for craters:

      • Craters on Mercury are named after famous deceased artists, musicians, painters, or authors.
      • Large craters on Venus are named after famous women.
      • Small craters on Venus are given common female first names.
      • Large craters on Earth's moon are named after famous deceased scientists, scholars, or artists.
      • Small craters on the moon are given common first names.
      • Craters on Jupiter's moon Europa are given names of Celtic gods and heroes.
      • Craters on Jupiter's moon Ganymede are named for gods and heroes of the ancient Fertile Crescent people.
      • Craters on the asteroid Ida are named for caverns and grottos of the world.

      http://chainreaction.asu.edu/solarsystem/digin/nam e.htm

    2. Re:Question. by arcanumas · · Score: 5, Informative

      Yes. Hellas is greek for Greece. It is the "proper" world for Greece and the one used from Ancient to Modern Greece by Greeks themselves (whe say "Hellada").
      'Greek' is also of ancient origin and is the word that other European nations called the Ancient greeks. It comes from the Slav world "grex" (greek-latin conversion, sorry) , is a derogatory term and means "the imposter". There are other possibilities for the origin of the word but the aforementioned is the most convincing one.
      So, Europe (and US) call Hellas as Greece and Asian counties call us Yunanistan (And that's another story :)

      --
      Slashdot Sig. version 0.1alpha. Use at your own risk.
    3. Re:Question. by cpeterso · · Score: 4, Insightful


      why do cultures insist on renaming other cultures' countries? Why is Germany not called Deutschland in English? That's like someone telling me his name is Larry and then I insist on calling him Daryl. This is disrespectful.

  2. Not surprising... by twilightzero · · Score: 4, Funny

    I'd be willing to bet that's where the martians have mass hot tubs and huge wild parties. If you listen closely, you can hear the cheap 70's porn music wafting up through the thin mars atmosphere...

    This post was brought to you by an extreme lack of sleep ;)

    --

    "Christ what a design! I could eat a handful of iron filings and PUKE a better emergency pump than that!"
  3. what this article is about by mandalayx · · Score: 5, Informative

    For those who 1) don't read the article and 2) don't know much about science, this is why this article is "important":

    Unusual warm spots on Mars might represent "ice towers" similar to those seen in Antarctica, say researchers. They could even harbour life, Nick Hoffman of Melbourne University told a conference on Thursday.

    Then the article talks about how some guy discovered this and what the further implications can be.

  4. ...or perhaps.... by madmarcel · · Score: 5, Funny

    Or....
    It could be methane emmissions from all those cows/rednecks that them pesky martians keep abducting ;^)

  5. Evidence of ice towers? by AndroidCat · · Score: 5, Interesting
    All they've got is some hot-ish spots, and Hoffman is talking about how high the ice towers are in Martian gravity. Perhaps the article skimmed his reasoning, but there seems to be a logical leap there with no proof that there are any ice towers.

    Even on Earth, there are a number of places with cold and volcanic vents, but ice towers form in only one place (the most extreme, granted). Obviously the conditions have to be just right. Other than being cold, Antarctica really isn't that much like Mars.

    The ice tower story sounds like either Hoffman was either playing to the media, or they were playing him.

    --
    One line blog. I hear that they're called Twitters now.
    1. Re:Evidence of ice towers? by AndroidCat · · Score: 4, Insightful
      On careful re-reading, I notice that the writer of the story is a bit sloppy about mixing statements and his own conclusions.
      That would provide the opportunity for the Mars Global Surveyor to capture high-resolution photos of the area, suggests Hoffman. The ice towers could grow as high as 30 m in the lower Martian gravity, and would stand out against the darker soil.
      Did Hoffman make the 30 m comment or did the writer? There seem to be a few places where this happens, as well as mixing comments from various people. Is Rachel Nowak a pen-name for Procrustes? (Greek mythology, read a book!)
      --
      One line blog. I hear that they're called Twitters now.
  6. I'm sorry, but I'm in a punny mood by Rhinobird · · Score: 4, Funny

    Mars Odyssey has detected warm spots in the Hellas basin.

    *ahem*

    Wow, it's Hellas hot around here.

    Thank you for your patience in this matter

    --
    If Mr. Edison had thought smarter he wouldn't sweat as much. --Nikola Tesla
  7. I, for one, am GLAD! by uptownguy · · Score: 4, Interesting

    I think there is life there and the U.S. government thinks we can't handle the truth, so hence we don't go.

    I suspect there is life, too. Of course I'm just an armchair scientist and this is just my humble opinion based on what I've read. Further, I suspect that "the government" (people, mostly) reads the same articles as you and is privy to the same data as you. That is what is great about living in an open society.
    I don't think there is any conspiracy keeping us from "handling" the truth. Why, you ask? Clinton couldn't keep things mum about getting blow jobs on the floor of the oval office. Nixon couldn't keep things mum about having broken into his political opponents' headquarters. Reagan couldn't keep things mum about having sold weapons to the Iranians to fund a terrorist army in Central America. Bush is having a problem keeping a lid on using forged documentation as a pretext for war (and WHO, pray tell, would forge such a thing anyway?) THESE are secrets that people would certainly have given anything to keep. And still they got out. Because "the government" isn't "the government" -- it is a bunch of people, all with agendas, all using what they know to their advantage when they can. Welcome to the wonderfully messy world of democracy.

    Anyway, I'm getting ahead of myself, the above wasn't my point -- but I had to debunk the tinfoil hat wearers in this crowd at least a little...

    I live in Minnesota, land of 10,000 lakes. Most of those lakes are becoming unswimmable because of something called Eurasian Milfoil. Milfoil is a weed grows in lakes. It grows fast. Several feet a day. It was accidentally introduced to America in the early 1900s. It wasn't native but there isn't anything in the lakes on THIS side of the pond that like to eat it so it quickly clogs the entire lake.

    And it spreads. From lake-to-lake. Boaters. Fish. Whatever. It finds a way to find a new lake that it can call home and it does. And once it does: Game over everyone else. Not instantly. And there is still a lake there. There is still water. And fish. But now there is a stinky gross weed clogging the entire lake for most of the summer, too. Not really enjoyable. A lot of nose holding and "I remember when we could swim in the lakes without all these weeds here" going on.

    Hold on... I'm still building here. And I'm almost to the good stuff. (wait for it...)

    My point is this: Let's say there is life on Mars. There won't be cows or zebra or fish or anything like that. No, there will be microbes. Tiny little red life forms that live with almost no oxygen and no water in the freezing cold, bombarded by radiation. Hmmmm... I'm not sure about the rest of you, but the prospect of bringing something that battle-hardened back to Earth to study does not inspire confidence in me. Chernobyl, Enron, Challenger, Columbia, Africanized Killer Bees, cross-pollinated genetically engineered corn... bad things happen unexpectedly. Stuff LEAKS. Again, no conspiracy needed, just the good old second law of thermodynamics coupled with that one law discovered by Murphy making a real world demonstration.

    As I said in the subject of my post: I, for one, am glad we aren't going to Mars. We don't need any more milfoil, at least for now. Frankly, I'd be happy to see us wait a few thousand years. For real. Red mold everywhere? Yuck.

    --


    I would have to say that explosives are the most abused technology in all of history.
  8. That's not an argument not to go to mars... by nounderscores · · Score: 4, Funny

    That's an argument to not come back.

    Imagine if we sent everyone we didn't like, just like in the colonial days of sail.

    Send them out into the worlds of ten thousand stars. They'll breed fast. Several children a decade. After all, we were accidentially introduced into america a long time ago, and we turned out ok. We weren't native but there wasn't anything on THIS side of the pond that like to eat us quick enough so now we're everywhere.

    We can spread. From planet to planet. Solar sails. Nuclear rockets. Whatever. We'll find a way to a new planet to call home. Once we do, we'll make it our business to ensure it's game over for everything else that metabolises. Not instantly, of course. There'll still be a planet there. Some natural parks. and little red microbes. But we'll terraform the place until it looks the way we like it to look.

    Hold on... I'm still building here. And I'm almost to the good stuff. (wait for it...)

    My point is this: Lets say there is life on mars. WE'LL KICK ITS /ASS(ES)|CARAPASE|SPINNERETTES|MANTLE|RING GANGLION|FLAGELLA|TAPROOT|HYPHAE|HOLDFAST|POSTERIO -VENTRAL REGIONS|Other appropriate target!/Hmmm... I'm not sure about the rest of you, but I am confident that my kind are battlehardened enough to explore strange new worlds, seek out new life and new civilisations, and fondue them. With appropriate technlogy they'd be able to live on not much more than dirt, water and sunlight.

    WE ARE THE BAD THINGS THAT HAPPEN UNEXPECTEDLY. We leak. Again, no conspiracy needed, just the good old second law of thermodynamics coupled with that one law discovered by Murphy making a real world demonstration that it applies to everyone in the universe, not just homo sapiens.

    As I said in the subject of my post: The inevitable spread of one lifeform over the corpses of another is not a reason to not to go to mars. It is a reason to go and never come back. The Brothers W made Agent Smith say that humanity spreads like a virus. I say that's not a bad idea. Imagine where we'll be in a few thousand years. For real. A human empire spanning most of the known universe with breakaway colonies running social experiments in government and morality? I'm packed. Bring it on!

    And yea though I walk through the valley of the shadow of death I shall fear no evil,
    For I am the evilest sonofabitch in the valley.
    -- Anonymous, 1967

  9. Too battle hardened by DumbSwede · · Score: 4, Insightful
    The trouble with extrapolating that battle hardened microbes will displace all competing microbes, is to overlook some of the main features of evolution. There are enough desolate places on Earth to breed such creatures, and they are populated by such creatures, but these hardy creatures don't displace the E-Coli in your gut. Why not? The adaptations to flourish in harsh environments depend of chemical tricks and adaptations that only work in harsh environments. Your lake weed example actually illustrates this point. These weeds evolved in very similar lake environments, and exploded in population only from lack of natural predators and parasites. Cactuses are very "battle hardened" plants, and yet are very unlikely to take over your Minnesota lakes.

    Should someone intentionally introduce Martian microbes to similar extreme environments here on Earth, we might see something similar, but contained within those extreme environments, and having little impact on that portion of the biosphere we usually experience. Sure it would have some environmental impact, but likely not disastrous. Most likely it would integrate with the local ecology, though perhaps not in way we would like. Esthetically you feel your lakes have suffered by introduction of a weed that wasn't native to the environment 100 years ago, but it's not the end of the world. Only evolution in action. The contamination of these lakes could have happened naturally, and a similar adaptation cycle would have occurred. I suspect introduction of alien species has little true long term impact on the biosphere. Which is not to say such disruptions are desirable, or don't have severe local impacts, aesthetically and economically.

    I would say it is likely we can bring back samples and contain them.
    If we have an accident, it is unlikely the microbes will spread because they are not adapted to the immediate environment.
    Should they somehow gain a toehold in an environment favorable to them, they will likely integrate with the ecology in some way, not totally displace it.
    All and all, I think these points argue well for taking the risk of sample return missions, the reward being unknown insights into biological processes.

    One final aside, I would use the International Space Station as a first containment stop for a sample return mission, and have written to NASA on this point. Not because is greatly enhances safety (and it probably adds to cost), but because it gives psychological reassurance to the general populace that NASA is doing everything to ensure safety, and it gives the ISS a true mission.