Comparing historical conditions (assuming it were possible through the interplanetary version of paleontology) on other planets might be a GOOD thing... let me explain.
If they found that on other planets parallel thermal fluctuations were going on to what was supposed to be happening on earth... know what that would prove? That it was the SUN to credit (or blame) for it. And that humans really COULD hope to do nothing except try to adapt.
The dried up oceans on Mars might get global warmists (AGW climate changeists) to dry up... wouldn’t that be music to our ears.
I think it’s just the Martians who live underground, all emptying the septic tanks at the same time.