Might have an answer in another millenia , or two
Thinking on extraterrestrial life goes back at least as far as the Greek antiquity.
The main argument for the existence of life forms and intelligent beings beyond Earth has been most clearly formulated by Metrodorus , disciple of Epicurus, in the 3d century B.C.: “To consider the Earth as the only populated world in infinite space is as absurd as to assert that in an entire field sown with millet only one grain will grow.”.