One of the most famous messages ever beamed to space was a string of 1,679 bits sent by the Arecibo radio telescope in 1974. But if E.T. sent us such a string, how could we Earthlings even begin to ...

Add Yahoo as a preferred source to see more of our stories on Google. "If you found out we weren't alone, if someone showed you, proved it to you, would that frighten you?" the official logline reads.

Attention human. You are receiving an interstellar radio transmission. And it could be coming from one of the nearest exoplanets, Proxima Centauri b. What conditions make this planet a candidate for ...