No matter what science fiction says, it's hard to imagine humans will ever be able to stomp around a planet in another planetary system looking for life - the distances, time, and energy involved are simply too great.But what if we could look somewhere else? Somewhere a little closer to home?What if fossilized alien microbes are already coming to visit us-even if it's by accident?
#people #back #potentially #getty-images #researchers #combination #uncertainty #solar-system #science-fiction #astronomers
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