In popular cultures, "Extraterrestrials" are life forms — especially intelligent life forms— that are of extraterrestrial origin (often also called "aliens").
Famous quotes containing the word life:
“It’s hard enough to write a good drama, it’s much harder to write a good comedy, and it’s hardest of all to write a drama with comedy. Which is what life is.”
—Jack Lemmon (b. 1925)