Question Mars

Given its watery past, there is a fair chance life did exist long ago. Landers are there looking for such evidence.

It’s also possible liquid water, perhaps as a brine, is currently below the surface. This might have existing life forms.

How life forms from chemical makeups (abiogenesis) is still unknown, so assumptions are required to quote one’s own odds for life.
 
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Given its watery past, there is a fair chance life did exist long ago. Landers are there looking for such evidence.

It’s also possible liquid water, perhaps as a brine, is currently below the surface. This might have existing life forms.

How life forms from chemical makeups (abiogenesis) is still unknown, so assumptions are required to quote one’s own odds for life.
Mars may have once sat precisely in the life zone location relative to the sun that Earth now sits in. Billions of years ago the sun may have cooled down, shrunk somewhat, to the state it now exists in where the Earth possibly orbits in a relative zone of a slightly smaller, slightly more stable and developed star, that Mars did once upon a time. Mars, also. may have once had more relative volume mass to it than it does now.
 

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