4 Quotes by Bruce Jakosky

We're getting clues but we really don't understand the basics yet.

We know an awful lot about the history of water on Mars,

If it's surface water, that would allow the possibility of photosynthetic organisms. Once you can tap into sunlight, it leaves open the possibility for a much greater abundance of life if it was ever there.

I think that this seems to point toward Mars being warm enough and wet enough to allow standing water