Democritus of Abdera (c.470–400 BC)
Democritus was a Greek materialist philosopher who developed the ideas of atomism,
originally put forward by Leucippus. Democritus
maintained that all phenomena were explicable in terms of the nomic motion
of atoms in the void. In the hands of Epicurus
and Lucretius, atomistic philosophy was
popularized and used to argue for the existence of extraterrestrial life.
Democritus was the first to claim that the Milky Way is made up stars.
Quote by Democritus
"Nothing exists but atoms and the void. "
related to the possibility of extraterrestrial life