According to Vanderbilt Professor of Astronomy David Weintraub, a majority of atheists believe in extraterrestrial life. That’s one of the revelations he discusses in his new book Religions and Extraterrestrial Life:
Specifically, he found that 55% of atheists believed in aliens while the number was lower for religious believers. Only 44% of Muslims, 37% of Jews, 36% of Hindus, and 32% of Christians felt the same way.
This is actually not a surprising claim.