Do you reckon that Mars had an ozone layer but it was destroyed by a gamma ray or something ?
Which would have stopped life from forming or destroyed the life that was already there?
Maybe they were advanced and escaped somewhere, floating in space looking for a new planet to settle on. Perhaps to earth 🤔 What if it was to earth and we are actually Martians?
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SW-User
Panspermia theory posits this -it just wasn't at an advanced stage :-)