I agree KPM. Mars is a strange place. Why? You get to ask yourself that ten million times. Mars is the most Earth like planet. Is it dead? Maybe. Was it once alive? Maybe.
I never ever thought of a planet as being alive or dead, but that would appear to be the case. Our sun will die as well. Millions or billions of years from now when our sun is a red giant and Earth takes Mercury’s place will Titan be the next Earth. Will life advance to the point were they build probes to investigate that lifeless rock next to the sun? Will they look at the surface and see any trace? Will we send life there on purpose when we know no hope is left? Will they ever figure it out?
Enough questions for now.
Fred