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:
“I have lifted the veil. I have created life, wrested the secret of life from life. Now do you understand? From the lives of those who have gone before, I have created life.”
—Edward T. Lowe, and Frank Strayer. Dr. von Niemann (Lionel Atwill)