I believe if life is common than there must of been at least one group of aliens that at least attempted to colonize it self everywhere in space?
Unless humans are a extreme anomaly and that most other aliens don’t really care about space exploration, and just focus on their home planet.
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i was under the impression that one of the theories for life starting on this planet was that it was spread to earth from elsewhere via comet impact or what have you
idk i just don't think massively retooling entire solar systems is something humans should do on any timeline that makes it worth discussing since we can't even manage to fully understand the ramifications of our actions on this single planet.
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similar to our inability to understand the repercussions of our actions, we have no real ability to discern that with certainty.
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