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Making life for space

  1. Apr 25, 2017 #1
    Would it be possible to craft a carbon based life form throw dna manipulation and selective breeding that could live in the cold vacuum of space??
    Also if I posted the thread in the wrong place I'm sorry I didn't know where else to place it.
    Once again thank you to anyone that will tack the time to reply to my post.
     
  2. jcsd
  3. Apr 25, 2017 #2

    Drakkith

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    About the best you could do is to create one that can merely survive a trip through space, most likely through a suspension of most bodily and cellular functions. Call it hibernation if you'd like. Living in space implies metabolic activity and such. But the problem is that there is neither food nor air in space, so the creature would have nothing to live off of. Even photosynthetic organisms need air and other resources to live.
     
  4. Apr 25, 2017 #3

    Ygggdrasil

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    Here's a nice review article from a scientific journal on the subject:
    Moissl-Eichinger et al. 2016 Venturing into new realms? Microorganisms in space. FEMS Microbiol Rev 40: 722. http://dx.doi.org/10.1093/femsre/fuw015
    https://academic.oup.com/femsre/article-lookup/doi/10.1093/femsre/fuw015

    The article explores the limits of these conditions in known terrestrial organisms both under natural and experimental conditions.

    You may also be interested in reading through a previous PF thread on the topic: https://www.physicsforums.com/threa...le-to-earth-bacteria-thriving-on-mars.906191/
     
    Last edited by a moderator: May 27, 2017
  5. Apr 25, 2017 #4
    Yep, there is no significant amount of carbon in interstellar space, so no organic chemistry can happen.
     
  6. Apr 25, 2017 #5
    Thank you for the article. I truly do appreciate the passing of info like we do on the forum hear.
    Does all organic chemistry have to be carbon bass???
    I was under the notion that silicon based life might be possible out there some wair or even something that we just have not found yet.
    sorry I'm not meaning to put your comet down at all. I'm just one of the individuals that believes that you have to keep an open mind if you are to discover anything new.
     
  7. Apr 26, 2017 #6

    Drakkith

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    The term "organic" has a specific meaning in biology and chemistry, where it means molecules containing carbon. All known examples of life are carbon-based, but it is not known whether life can be based on something other than carbon. See here: https://en.wikipedia.org/wiki/Organic_compound

    Open-mindedness has nothing to do with this. It's simply just another example of how terminology differs between laymen and scientists. And also between forum members. :wink:
     
  8. Apr 26, 2017 #7
    Silicon does have some similar chemistry to carbon but there are no known silicon analogs to anything like DNA.
    One very big difference though is that whereas carbon oxides are gases and are soluable in water Silicon oxides are solids (at Earth like temperature) and not soluable,
    This means that any silicon based biochemistry would have to evolve not in water, but in something like volcanic lava.
     
  9. Apr 26, 2017 #8

    Fervent Freyja

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    It could be possible in the future to send a carbon based nanoelectromechanical human-like robot into space that uses mechanical parts that mimic genetic/cellular processes. Both technologies are under study. It would not be considered a life form, as it would be chemically inert. Powering and maintaining it would be much easier to do than for a human in space. Why would we need to do that though?
     
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