With the possibility of life having been present on Mars and other planets, astronomers and astrophysicists are still searching for actual evidence of extraterrestrial civilization. So far, there have not been any signs of alien lifeforms inhabiting other planets in the galaxy but there is no discounting the possibility of there being some that exist. A research team has tried to explain why we haven't seen any aliens or technosignatures from outer space yet and they looked through the lens of the Fermi Paradox and tried giving a more nuanced explanation to it by considering the possiblities laid out by Fact A.
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