If and when SETI discovers alien life, a revised Declaration of Principles guarantees once the discovery has been verified, ...

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a ...

For over six decades, the Search for Extraterrestrial Intelligence (SETI) has been tirelessly scanning the cosmos for signs of alien life. Despite its extensive efforts, the universe remains eerily ...

"If a signal gets broadened by its own star's environment, it can slip below our detection thresholds, even if it's there." When you purchase through links on our site, we may earn an affiliate ...

Creator Noah Hawley, star Babou Ceesay and more of the 'Alien: Earth' creative team break down Season 1's standout episode, ...

Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as he argues that humanity may be the only intelligent life in the universe.

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.

A migrant advocacy organization that helps refugees throughout the world is taking offense to a White House website that says ...