- #1
primal schemer
- 54
- 0
Hi Guys,
Just a question that has been bugging me for a while about looking for life on Mars (or any other planets).
When landing on mars, NASA (or whoever) always seem to search for water as a sign that life once existed on mars. Is it not a bit presumptious to think that just because life on Earth requires water, that life on different planets will too??
Is it that unconceivable to think that there could be a life form that can live off different 'food' (minerals from rocks, sunlight, for example)?
I know that the biology of everything we know (obviously) comes from the life forms on this planet, but isn`t that a fairly small sample to be using??
Cheers,
PS
Just a question that has been bugging me for a while about looking for life on Mars (or any other planets).
When landing on mars, NASA (or whoever) always seem to search for water as a sign that life once existed on mars. Is it not a bit presumptious to think that just because life on Earth requires water, that life on different planets will too??
Is it that unconceivable to think that there could be a life form that can live off different 'food' (minerals from rocks, sunlight, for example)?
I know that the biology of everything we know (obviously) comes from the life forms on this planet, but isn`t that a fairly small sample to be using??
Cheers,
PS