fermit paradox

The Fermi Paradox is like a puzzle about the universe. People have been wondering for a long time about why we haven't seen any aliens or evidence of them, even though it seems like the universe is so big and there could be many other planets with life on them. It's like a paradox because it is confusing why aliens haven't been seen if there should be a lot of them. People think that aliens should be out there because the universe is so big and if life on Earth is even slightly possible then life on other planets should be possible too.