A little over a month after former President Barack Obama re-opened the door to discussions about extraterrestrial life, a new study shows how frequently people think they could have spotted aliens.

But do alien abductions? Extraterrestrials kidnapping humans, taking them to their space ships, performing experiments on them, cutting them open, raping them, forcing women to bear hybrid babies?

Aliens are back in vogue. Haven't you heard? Fascination with little green men piloting saucer-shaped UFOs was long the purview of tinfoil-hat wearing conspiracy theorists and "X-Files" devotees. But ...