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 Originally Posted by Eric
Is there methane based life on Titan that eats hydrogen?
Dunno.
There is currently no known evidence of extra-terrestrial life. There is a bit of fuzziness there in that amino acids have been found in (I believe) comets and asteroids.
wikipedia "Life on Titan"
If it's there, it's going to be exotic to say the least. We know basically nothing about the origins of life. Our direct evidence only suggests that it happened on Earth (or near enough to Earth and was deposited here).
It would be a huge boon to biology to have another example to study.
Niel DeGrasse Tyson has said that he would be excited just to find DNA anywhere but Earth.
Some researches found a possible cell wall structure which might work.
It's a computer model of a structure with similar properties to a cell wall. It has not been observed in nature (as far as I can tell from the article).
It sounds like this is only one piece of the puzzle. A cell wall is important insofar as it protects the rest of the cell. We still need a model (if not example) of the internal chemistry/biology that makes up the cell.
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