Post History
Yes, via panspermia. Panspermia is the idea that extremophiles "hitch a lift", as it were, on ejecta from collisions between celestial bodies. There are a few obstacles, because the microbes would...
Answer
#1: Attribution notice removed
by
System
·
2020-06-01T14:13:46Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/28670 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/