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:
“They sought it with thimbles, they sought it with care;
They pursued it with forks and hope;
They threatened its life with a railway-share
They charmed it with smiles and soap.”
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)