from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Originating, located, or occurring outside Earth or its atmosphere: intelligent extraterrestrial life.
- n. An extraterrestrial being or life form.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment.
- n. A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien
from the GNU version of the Collaborative International Dictionary of English
- adj. originating or located or occurring outside Earth or its atmosphere.
- n. a hypothetical form of life existing outside the Earth or its atmosphere, especially intelligent life on other planets or in other solar systems.
from The Century Dictionary and Cyclopedia
- Occurring outside of the earth; extramundane.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a form of life assumed to exist outside the Earth or its atmosphere
- adj. originating or located or occurring outside Earth or its atmosphere
My spouse Xualaxar and I find lots of inherent interest in extraterrestrial romance.
"I don't really believe in extraterrestrial life, but if we set something up like that, we'd be prepared for anything," said Brandon Coby, 23 years old, a biology major at the University of Colorado.
There, during the 60s and 70s, nearly all of the Apollo astronauts who walked on the moon were taught the basics in extraterrestrial exploration and earthworks.
We all thought it was about testing survivability in extraterrestrial environments, when it was really to see if humans can survive in what they know our eventual environment will mostly likely be here on earth.
More than that, the American authorities encouraged people's interest in extraterrestrial visitors as a way of covering defence activities.
Given that many of us (well likely all of us) here at SFSignal read Sci-Fi I'd expect that most are want to believe in extraterrestrial life too - but is there anybody who feels strongly that we must be the only intelligent beings in the universe?
This is no hard-and-fast rule, but: Isn't that the phrase extraterrestrial armadas always use--right before they blast the puny humans to kingdom come?
I'd recommend this book to anyone interested in extraterrestrial activity, politics ...
I think that's where we, or at least I, broached the idea of extraterrestrial life and the question of what such a language—not just of science, but also of art and poetry—would look like in a civilization far more advanced than ours.
Nonetheless, his working hypothesis appears to be that the methane is, or was, produced by organisms—that is to say, extraterrestrial life.