When ET phones, don’t pick up. Scientists have outlined a set of protocols for responding to extraterrestrial contact, ...

How Radio Astronomy Helps Us See the Invisible Cosmos," astrophysicist Emma Chapman describes the hidden corners of space that only radio waves can reveal — and makes the case for contacting aliens.

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist ...

Add Yahoo as a preferred source to see more of our stories on Google. We humans have numerous scientific activities currently involved in the search for extraterrestrial intelligence (SETI). These ...