[mvn9]

>Martian surface temperatures vary from lows of about −143 °C (−225 °F) at the winter polar caps[14] to highs of up to 35 °C (95 °F) in equatorial summer.

https://en.wikipedia.org/wiki/Mars

Had to look this up. Seems like there is the same temperature window available on Mars that is needed for life on earth.

[dogma1138]

That’s today without atmosphere, liquid water and with a solidified core I’m not sure were close to estimating when the core has solidified as far as I know we also have no method for dating anything on mars.

When mars was wet, geologically a GI d and still had an atmosphere the temperatures would’ve been much closer to earth today.