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:
“When it’s over I don’t want to wonder
if I have made of my life something particular, and real.
I don’t want to find myself sighing and frightened,
or full of argument.
I don’t want to end up simply having visited this world.”
—Mary Oliver (b. 1935)