The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

One of Britain’s most prominent space scientists believes humanity may finally get an answer to one of its oldest questions ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

For decades, scientists have searched the skies for signs of alien civilizations. This breakdown looks at why that approach ...

Earth season 1 - Hulu The "Alien" franchise has enjoyed an exceedingly long life, even by Hollywood standards. Ridley Scott's ...

A light moment unfolds during Russian President Vladimir Putin’s annual news conference when a journalist asks about a ...

President Vladimir Putin's epic annual press conference on Friday was punctuated by bizarre moments and occasional barbs from ...

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...

President Vladimir Putin's epic annual press conference on Friday was punctuated by bizarre moments and occasional barbs from ...

Follow live updates from NBC News as Russian President Vladimir Putin speaks at his annual year-end news conference on ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...