Are humans really prepared to meet an extraterrestrial civilization in this century? A new study suggests we're psychologically ill-prepared for this monumental event — and that the prominence of religious beliefs has a lot to do with it.
We have yet to make contact with an extraterrestrial intelligence, making it exceedingly difficult for us to imagine what an alien civilization might be like. But that doesn’t mean we can’t make some educated guesses. Here’s what we know — and don’t know — about aliens.