The internet went into a frenzy on Friday when a NASA astronaut shared a weird alien-looking photo on social media. The photo ...

A retired 'UFO general' and a NASA-linked scientist have both vanished in the US, fuelling clashes over whether the case points to espionage, a cover-up or something stranger.

A former NASA developer has analyzed 1950 photographic plates showing nine unexplained objects in Earth's orbit, years before the first satellite launch, sparking alien technology theories ...

Aliens: "Sorry, you're cutting out!" The post Something May Be Scrambling Alien Messages, NASA-Funded Research Finds appeared ...

NASA has taken a bold step in the search for alien life beyond Earth. The space agency announced the selection of seven advanced technology partners for its next major mission, the Habitable Worlds ...

Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible ...

Answers to some of those questions could finally become public after President Trump's call last week for the release of ...

If aliens are out there, why haven’t we heard from them? That’s the question at the center of Pop Mech’s new story, “Aliens Probably Exist—But They’re Staying Silent For a Reason, NASA Scientist ...

Space conspiracy theorists are accusing NASA of cutting a live stream from the International Space Station just as an unidentified object comes into view. Theories began swirling on YouTube earlier ...

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens living on the planet. All sorts of bizarre objects have been spotted ...

The race to compile a sort of catalogue of the planets orbiting distant Suns is intensifying, with the upcoming Nancy Grace Roman Space Telescope, for instance, set to spot tens of thousands of such ...