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Life outside our planet recognizable?
I realize this will all be mostly conjecture, but do you think extraterrestrial life will follow a similar or at least recognizable path compared with ours? Possibly due to certain attributes being beneficial to life in the universe in general? Or do you think that it will have followed such a drastically different path due to differences in environment, that the further along the "tree of life" it is, the less likely we will be to even recognize it at first, and may even have to redefine what life is.
5 Answers
- green meklarLv 71 decade agoFavorite Answer
Most naturally occurring life elsewhere in the Universe is probably close enough to being like ours that it will at least be recognizable to us once we find it. We just don't know of any substrate other than carbon chain chemistry that really gives a good opportunity to produce biological life forms. It is conceivable that life may exist that uses water instead of ammonia as its solvent, but past that, it looks pretty unlikely. Anything 'weirder' than that would probably have to be artificial.
- Anonymous1 decade ago
In some ways, it might be very similar. I have a feeling that a lot of life would be based on carbon just because not only is carbon a very useful molecule for building organic molecules, but the universe is filled with the stuff.
Life on earth is basically made up of Hydrogen, Nitrogen, Oxygen, and Carbon. These elements are extremely abundant, and therefore, it makes sense that life would be comprised of them.
Also, amino acids seem to be pretty common in the universe. If this is the case, it also seems possible that life would evolve elsewhere to take advantage of this. So we may even see DNA based life that uses amino acids to synthesize proteins.
I think that might be where similarities stop, though. If you think about it, human beings share 80% of our DNA with an oak tree, yet humans and oak trees look nothing alike. How would we compare to an alien species that might have 5% of our DNA in common?
- Anonymous4 years ago
As for the opportunity of any variety of existence everywhere, it would *look* to be in simple terms approximately inevitable. yet people who say that is definite, are overstating the case. We could enable for the prospect, no be counted how reasonable, that our planet could be unique. There could nonetheless be a pair of places in our image voltaic gadget the place uncomplicated, microbial existence ought to exist, however the possibilities of smart existence is largely nil. The galaxy and of direction, the Universe furnish an massive variety of opportunities for smart existence, even though it is so uncommon that it must be 1000's of years formerly we ever detect it. If this variety of discovery is ever made, it is going to easily approximately genuinely be by applying detecting some variety of EM transmission, probable radio, from yet another celebrity gadget.
- DLMLv 71 decade ago
It will have adapted to its environment in the way Earth species have adapted to theirs.
I wonder, what would a lifeform on Earth resemble? If you go by averages, it would look like a bacteria.
I'm just saying, life here is very diverse. There is no reason to assume that wouldn't be the case, if it developed and had time to evolve somewhere else.
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- For Me to knowLv 51 decade ago
When and if life outside of planet is ever found life the type of form it takes is anyone's guess given there a hundreds of environments that could contain life of some form