When was the Fermi paradox created?
Fermi paradox
There are billions of stars in the galaxy that are similar to the Sun,[3][4] and many of these stars are billions of years older than the Solar system.[5][6]
With high probability, some of these stars have Earth-like planets,[7][8] and if the Earth is typical, some may have developed intelligent life.
Some of these civilizations may have developed interstellar travel, a step the Earth is investigating now.
Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in a few million years.[9]