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Salty Ocean On Europa Could Mean Life

Arctic Fox writes: "Based on data from the Galileo satellite, scientists have evidence for a salty ocean under the surface of Europa.
As reported in this article from the UK Times. Who cares about water? Now if they could only find a monolith."
The underpinnings for life grow tantalizingly more evident as our vicarious observations grow in detail and scope. From the article: "The probe has also detected patterns in the moon's magnetic field that could be generated by a liquid ocean underneath its surface. Because salty water conducts electricity, its presence on Europa, which is within Jupiter's magnetic field, would lead an ocean to generate a field of its own."

23 of 315 comments (clear)

  1. Mmmm Fish Sticks by TheMZA · · Score: 5

    NASA PRESS RELEASE: We have sucessfully spent $30,000,000,000 to pump new life into the now stagnent frozen fish market.

    --

    "retro-fitting for the unwitting"
  2. Re:2010 by TheMZA · · Score: 3

    No that was an episode of IRON CHEF

    --

    "retro-fitting for the unwitting"
  3. Ingredients for life by The+Famous+Brett+Wat · · Score: 4

    Place your bets now. Will there be life found elsewhere in our solar system? Secondary bets may be placed on the following, for those who prefer to wager on human nature rather than nature itself. Will the presence of life on other planets create significant doubt amongst creationists? Will the absence of life on planets which have all the supposed necessary ingredients create significant doubt amongst evolutionists?

    --
    proof, n. A demonstration that a conclusion is implied by certain premises and axioms.
    1. Re:Ingredients for life by Azog · · Score: 4

      I don't think the presence of life on other planets would be a problem for creationists - at least not thoughtful creationists. (And yes, there are some, not all creationists are redneck anti-science ignoramuses, etc.)

      In fact, C.S. Lewis, originally an athiest who became one of the most famous Christian authors of the last century, also wrote a little bit of science fiction. Besides that, he wrote an essay on the subject of what it would mean to Christianity to find life on other planets. Basically, it wouldn't be a big deal from a theological perspective, although it would be incredible scientific discovery. After all, if you are willing to believe God created life on earth, why wouldn't He create it other places as well? Most of the essay actually considers the potential Christian responsibility to meeting intelligent aliens - what if they have a different religion, or no religion, or are morally perfect and don't need Christianity, or totally evil.

      An interesting essay, at least for Christian-type nerds.

      Torrey Hoffman (Azog)

      --
      Torrey Hoffman (Azog)
      "HTML needs a rant tag" - Alan Cox
    2. Re:Ingredients for life by Frymaster · · Score: 5
      originally an athiest

      We are all originally atheists. Newborns have no knowledge of or belief in god[s].

      After all, if you are willing to believe God created life on earth, why wouldn't He create it other places as well?

      My big concern is that if you're capable of believing that god created life on earth, what aren't you capable of believing? The "all powerful" creature that works in "ways that cannot be understood" is a monsterous monkeywrench in critical thinking. There are people who believe the earth is hollow. If you believe in the all-pwerful/not-understandable god, you have no basis to disbelieve or be skeptical of the hollow-earthists. The supreme and incomprehensible being could easily hollow the earth out. Go and look, see the earth isn't hollow. But it could have been filled in seconds before you looked and hollowed out again as soon as you turn your back. Or it's non-hollowness could be an illusion. With an omnipotent/incomprehensible god it's as equally probable as any other possibility.

      Everything becomes arbitrary, subject to the whims of an omnipotent and incomprehensible force. Anything is possible and even your senses cannot be trusted (an omnipotent being could spoof your senses surely). The laws of physics could change tomorrow, pi could be rounded down to three...

      If you believe the Bible, you believe nothing...

    3. Re:Ingredients for life by The+Famous+Brett+Wat · · Score: 3

      Your characterisation of those who believe the Bible is a straw man. I could do the same for those who subscribe to the various "anthropic principles". The Weak Anthropic Principle, for example, suggests that the improbability of life arising is of no matter, since only those universes which contain observers (and thus life) are observed. One could go on to say that all probabilities are irrelevant, since we are just one of an infinite number of universes in which, no doubt, all things can and do happen.

      Everything becomes arbitrary, subject to the whims of chance in an infinite number of universes. Anything is possible and even your senses cannot be trusted (infinite possibilities include universes where your sense data bears no relationship to reality). The laws of physics could change tomorrow, pi could be rounded down to three...

      Or not. Most people who hold to the Weak Anthropic Principle don't take it to this extreme, and most people who believe in the Biblical God don't believe that He changes things around at random, even if he can.

      --
      proof, n. A demonstration that a conclusion is implied by certain premises and axioms.
  4. Re:Discovery Show by Crixus · · Score: 3
    They were doing a special on the moons of Jupiter, and they mentioned that sometime in the year 2002 (2003?), they will be launching a probe that will attempt to land on Europa, and release a heating vent of sorts that will melt through the ice to the water below, and (hopefully) see what's under all that ice.

    That soon? I think the technical challenges are too great to mount such a mission so soon. We might be dealing with an ice layer severel miles thick.

    It is my personal belief that there IS life down there. I can't wait until we prove it.

    Rich...

    --
    Ignore Alien Orders
  5. No Public Interest in Space Exploration? by 2quam4 · · Score: 3

    Comparing the public's interest in space exploration now with the '60s, it seems that the public does not care. Possibly the public embraced space exploration during the '60s as a means of 'hoping for better things.' During war, corruption and the cold war, space exploration was a 'happy thing', something that people could get excited about. Now, we are busier with our lives, no cold war worries and, sure, corruption is still around. What would motivate the U.S. and other nations to have a renewed interest in space exploration? I have never heard the issue raised during the presidential-race. The public generally does not care? No mission to mars? Alpha-centauri? Am I crazy? Should I lead an isolated life and join one of Joe Firmage's funky organizations?

    1. Re:No Public Interest in Space Exploration? by xtal · · Score: 5

      I've given this a fair bit of thought, because one of the few hopes I have for our race is that we win the great game of civilization :), and get off the planet to establish a permanant, self-sustaining presence in space. Never before has a species that's evolved on this planet been able to leave the world that it was created from - and guarantee that it will not be easily extincted. It's too bad that alone isn't a noble enough cause.

      People DO care about space, however, contrary to what you say - or at least, once upon a time, they did. The problem is that they were never given a reason to think that it in any way affects them - you don't even need people in space to sucessfully launch satellites. I once worked for a very smart man who was a astrophysicist on the apollo program (Even had a extremely cool certificate signed by all or most of the apollo astronauts). He left because he realized he would never see space himself - the will wasn't there. So, this generation of people becamed disallusioned with the greatest achivement of mankind - that flag on the moon. Those people were the parents of the 20-somethings here, and they didn't push their kids to chase something unobtainable.

      Something else I wonder about is how many people that live in the cities have ever really been far enough away to truely apprecate the stars - when there's no light, on a clear night in winter, there's almost more white than black in the sky when you look up - it's amazing. (I live in Canada, YMMV).

      On top of all that, it's pretty good for western peoples on earth right now, and they're the only ones that have the means and wealth to undertake a major space push - and they don't wanna. I'd love to have a box on my income tax where I could donate money to NASA tax free. Never happen. (hell, it's even foreign, the Canadian Space Agency is a national political joke located in buttf-ck nowhere Quebec. Great way to attract the best and brightest! ).

      So, the way I see it, something has to happen to the current political climate on earth, and none of it is very pleasant (I, personally, will never see space first hand, nor will 99.9999% of the populace, and it's discouraging - where's our real-time feed of earth in HDTV that Clinton promised many years ago? Eh? Scared of people seeing the aliens? :)

      So, let's talk about what might change attitudes:

      Discovery of life in our solar system.

      This is a biggie. However, it's hard to concretely prove life is somewhere without sending someone there first hand to test on the spot. So, we've got a catch 22 here, assuming that Europa has, or mars had, life on it.

      Earth getting to be a nasty place to live in a hurry

      A couple things could happen here. The most likely is that a medium-sized asteroid hits earth and kills millions of people, but doesn't distrupt civilization - this would wake people up in a hurry. Of course, it would suck to be unfortunate enough to be a martyr. Just hope it hits land, and it's not too big (this definately will happen eventually, but nobody knows when). A side effect of this is that it might trigger a small war accidentally, but NORAD and I assume the Warsaw Pact nations still track asteroid entries into the atmosphere for this very reason!

      Another possibility is a small / medium sized nuclear war that ends up seriously shortening lifespans (40 years in developed nations due to cancer). The need to leave would be pressing, then.

      Huge leaps in technology that enable easy lift capacity and/or near FTL speeds, or some warp technology

      There are calculations that prove warping space is possible - there's been a few postings to /. in the past few years - the energies required are not practical. This, or a breakthrough along the lines of a unified theory that related electromagnetism and gravity and allowed us to develop gravity-based technologies (That's why a unified theory is such a big deal in physics, but nobody will say that, since they would sound crazy). These are unlikely because any technology that allowed this would COMPLETELY destabilize the economic structures of the west (we run on oil, and on capitalism - unlimited free energy ends capitalism), and as such, would be repressed under severe penalties and/or disinformation. Who knows what mysteries the hydrogen bomb researchers might have found? We'll never know. That of course is the other problem - unlimited energy or a unified theory might make weapons of mass destruction much easier to obtain. There was a good outer limits on this one, and might explain why we haven't detected an advanced civilization yet - they all go boom.

      Contact with intelligent aliens

      This, of course, would change things overnight, and unify humanity. I'm a skeptic of most UFO sightings, but there is a LOT of evidence out there, and the one that stands out in my mind is the footage and radar information that the Beligan Air Force shot - it's completely fucking unexplainable, even the Beligan government says so. It's a great watch, it's on TLC every now and again. This would also change the political power structures as humans would see their might be other things they should be worried about, and would funnel resources into thinking about how we can advance technology quickly.

      Arrgh, I can't believe I wrote all that. Just some rants..

      --
      ..don't panic
  6. Re:Probability by susano_otter · · Score: 3

    What does probability have to do with it? So far, the only evidence we have that the probability of life is anything greater than zero for a given planet/-oid/moon/nebula/toroidal gas-cloud/pocket dimension/Jon Katz is the evidence of our own planet.

    And don't forget that we may all be evolved from Martian bacteria, or interstellar cooties, or whatever the Space Flavor of the Week is.

    Of course, this week's Space Flavor happens to be "salt water on Europa". It doesn't really change anything, except maybe our understanding of the planet. Then again, it does mean that conditions for life as we know it may in fact prevail on parts of that remote sphere.

    Not that it's a sphere, natch... but while I'm here, it occurs to me that every time we learn something new about Europa, it seems to be some new condition for terrestrial life that the moon has met. It certainly helps to build the suspense, don't it? Europa will turn out to be the Al Capone's Vault of the new milennium, or else one of the greatest discoveries in human history. Personally, I can't wait.

    As for it being a moon, and therefore more extreme, I'll wager 100 interplanetary megabucks (or whatever base unit of currency we and the Europans end up using) that the conditions on Venus are not only more "extreme" than the conditions on Europa, but that the conditions on Venus are more extreme than the conditions on Venus' own moons. Honestly, you make even less sense than I do.

    --

    Any sufficiently well-organized community is indistinguishable from Government.

  7. Comment removed by account_deleted · · Score: 5

    Comment removed based on user account deletion

  8. Re:Waitta minute by Fantome · · Score: 3

    No no no, that's only in Frankenstein.
    Then in the eighties, it became popular to throw random chemicals together to create life.
    These days, the more existential sci-fi justs conjures life out of mid-air, some how dealing with will-power and bulging frontal lobes.

    Right now, I'm creating an army of fire-breathing penguins on Europa and directing the linux-kernel mailing list there, in the hopes that the large amount of flaiming will heat the planet enough to create a tropical paradise by my retirement in the mid 2030s.

  9. Re:The size? Moonish. by chrissam · · Score: 3

    How is Europa's size compared to Earth's or Luna's? With this discovery, could this be a comfortable place for people to live (with water and all)?

    Europa's diameter is 3,138 km (1,946 miles), just a bit smaller than Earth's moon.

    The surface gravity is also slightly less than that of our moon, which is 1/6 Earth gravity. That wouldn't stop people from living there, but the fact that the entire surface is ice would make it a bit, well, slippery.

    I know it's far away, but how does it compare to Mars?

    Europa isn't really comparable to Mars in many ways. Mars has an atmosphere -- thin and unbreathable, but much more substantial than vaccuum. Also, being much closer to the sun, Mars would have more energy available for things like growing plants and generating power from wind and sun.

    On the other hand, I suppose that Europa's oceans (assuming they exist) could be more hospitable than the surface! Anything's possible... especially when monoliths are involved. :)

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    --
    Is it okay to cry "Movie!" in a crowded firehouse? --Steve Martin
  10. Re:2010 by emag · · Score: 3

    Actually, in the book there was a joint Soviet/American mission, as well as a Chinese mission. The Chinese got there first, landed on Europa, and started pumping water into their tanks. The lights from the ship attracted some plant-like animal which destroyed the ship. The remaining Chinese astronaut (one of two not on/near the ship at the time) then started transmitting to the Leonov even though the Chinese had been maintaining radio silence until that point. He described what had happened, and kept transmitting until they lost the signal. They never regained it.

    Having just read the book (and working on 2061), I'm really disappointed by what was left out of the movie. Not that it's a poor movie, but the book is (almost always) so much better.

    --
    "The urge to save humanity is almost always a false front for the urge to rule." --H.L. Mencken
  11. Re:There is no life outside Earth by Frymaster · · Score: 5
    If God had created any life outside of this Earth He would have written so in his word, the Bible

    Really, you don't want to take the lack-of-inclusion-equals-false approach to using the Bible truth-o-meter. The bible never explicitly states that the square root of 9 is three, Bill Clinton smoked pot or my shirt is blue... but all those things are true.

    there is really no way they can verify this without actually finding existing life

    ... now if only people would apply that high standard of proof to the existence of god we'd be getting somewhere!

  12. Re:There is no life outside Earth by SEE · · Score: 3

    Amazing how many people fell for this. Man, you should try alt.religion.kibology for a while.

    Other than the blasphemous assumption in the second paragraph, it was pretty good. But, there are Fundamentalist Christians who actually do make those kind of categorical statements about what God would or would not do, without any Scriptural support.

    Oh -- one thing. You assumed Europa existed, despite the fact that it's not visible to the naked eye and isn't mentioned in the Bible. A line about how astonomy moved straight from serving Satan through astrology to serving Satan through godless science would have served well.

    Steven E. Ehrbar

  13. Life by maggard · · Score: 4
    We've one example of life: Earth's. Not much to compare & contrast with, eh?

    Finding life, of any sort, elsewhere, would give us a great deal more information. If it's similiar to ours it implies that there's similar processes going on elsewhere, or that we're related. If it's different then it gives us entirely new insights into how complexity evolves. Either way it's exciting stuff that could advance our understanding of biology, biochemestry, evolution, complexity, etc. immensely. It could even give us better numbers to plug into those formulas for figuring out how likely we are to have neighbors.

    Nobody is expecting anything on Europa to pop up & greet us with a "Codex Universalis" - just there being anything lifelike* would be enough. Even there being nothing will tell us something

    -- Michael

    * We still don't know enough about life yet to come up with a really good definition anyone is particularly comfortable with.

    --
    I don't read ACs: If a post isn't worth so much as a nom de plume to its author then I wont bother either.
  14. Re:Discovery Show by iain_buchanan · · Score: 3

    Dear fellow aliens,
    I've just discovered this planet called Earth, which may or may not have life on the surface it. Unfortunately the life seems to be beneath an unpleasant gaseous layer. I'd like to launch a mission during which we'll freeze the entire atmosphere, and make contact with the life on the planet surface who will no doubt be extremely friendly and appreciative about our visit... Who is interested in helping fund this endeavour? :-)

  15. He did. by Black+Parrot · · Score: 5
    > If God had created any life outside of this Earth He would have written so in his word, the Bible.

    If I might paraphrase your avatar's words upon his reported ascension into space,
    <somber_prophetic_voice>I have sheep in other folds whereof you know not, and I now go to visit them.</somber_prophetic_voice>
    Therefore fundamentalists and trolls should expect to find some sort of "sheep" elsewhere in the universe. Your ass is covered on that account.

    But you might be in trouble in other regards:
    <somber_prophetic_voice>Blessed is the troll who masters his subject matter, for he shall be a great fisher of gullible men. Or at least moderated up as funny. But woe unto those lamers who try to get by without boning up on their material, for they shall be moderated down to the depths of hell with "-1, troll" and "-1, flamebait", whereupon they will weep and gnash their teeth and have to create a new Slashdot account to purge their negative karma.</somber_prophetic_voice>

    --
    --
    Sheesh, evil *and* a jerk. -- Jade
  16. Re:The size? by stubob · · Score: 4

    I was going to post this article from cnn.com about the future explorations of Saturn and Jupiter's moons, but didn't because I didn't think it was interesting enough.

    It covers most of the "interesting" moons: Io, Europa, Ganymede, Callisto and Titan. It's pretty interesting to hear how the scientists have changed their opinions of these moons as our technology has improved. This may be a case of improvement without any real benefit, but it still goes to show that they will freely admit they don't know everything and sometimes get things wrong.

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    Planning to be moderated ± 1: Bad Pun.
  17. Re:Space program! by Pxtl · · Score: 3

    I know this is a troll, but I also know that there're those who really have this opinion, so I'll bite. Ummm, howbout satellites, for example? If not for the space-race with the russians, the extensive launching system for our satellites would not have been developed. They're a major contribution to our communication infrastructure, weather research, international reconnaisance (if you like military spending, hows that?), GPS for god's sake. These benefits were not apparent at the time of Sputnik, just as the benefits of Europa are not apparent now.

    Could you imagine the medical and material science possibilities of finding another naturally-developed form of life? Look at the myriad uses of crude-oil. The massive amount of pharmaceuticals developed from esoteric wildlife. Imagine if we find something equally useful on Europa. Sure, it'd have to be pretty damned important to merit importing it across space, but if we didn't check, we'd never know at all. We won't find ET, but we could find something we can use.

    I do agree that most space research is, by and large, abstract knowledge. But some of it has very real possibilities. International space station is such a possibility. If we can make a sustainable orbital platform in orbit, where else can we build one? Around Europa? In the asteroid belt for its rescources? NCC-1701-E wasn't built in a day. If you ever want it to happen, you have to give people a chance to get there.

  18. Inspiration for: My Europa by ackthpt · · Score: 4

    (To the tune of My Sharona)

    Ooo my little pretty moon, my pretty moon
    When you gonna show me some life, Europa?
    Ooo you make my mission run, my mission run
    Gonna look in your brine, Europa

    Never gonna stop
    Gotta look
    Such a purty brine
    Always gotta look
    For the sign of life
    My my my my my
    Woo!
    Mm mm mm my Europa

    Gonna look a little closer huh
    Whatcha got?
    Close enough to look in your brine, Europa
    Keepin' it a mystery, gets to me
    Running down the depth of your brine, Europa

    Never gonna stop
    Gotta look
    Such a purty brine
    Always gotta look
    For the sign of life
    My my my my my
    Woo!
    Mm mm mm my Europa

    When you gonna show to me, show to me?
    Is it just a matter of time, Europa?
    Is it d-d-destiny? D-destiny?
    Or is it just a game in my mind, Europa?


    Vote Naked 2000

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    A feeling of having made the same mistake before: Deja Foobar
  19. Re:There is no life outside Earth by JMZorko · · Score: 3

    Emerson,

    The Bible is a grand, beautiful book, and I think that Christ was one of the greatest teachers and thinkers that ever lived (despite my being agnostic). However, to take the word of the Bible literally (or to "literally imply") is to fall into that same trap as so many others have fallen into i.e. people who have used the word of the Bible to justify all sorts of less-than-cool stuff.

    It's one thing to subscribe to a belief system, especially one with as many good things about it as Christianity. But these systems must adapt to the times -- the Christian of today doesn't believe many of the things that a Christian of 1000 years ago believed. Does that make today's Christian more or less of a Christian as judged by the standards that existed then?

    Creationists all too often see science as trying to 'disprove' the existence of a divine being. I think that this is a negative way of looking at it. I like to think of science as trying to find out more about the universe that God (if there is a God) made.

    Regards,

    John

    --
    Falling You - beautiful