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

It’s one of the most popular themes in science fiction—top secret government experts are ready to spring into action if a UFO appears. For example, in the novella-based 2016 film Arrival, the ...

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.

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 ...