President Donald Trump has suggested the Pentagon is preparing to release "very interesting" UFO files uncovered by his ...

A viral image of a seemingly perfect square on Mars, first captured in 2001, has been clarified by NASA as a naturally eroded landform shaped by intersecting cliffs, ridges, and asteroid impacts. The ...

For the first time in the history of space exploration, a robot on the surface of another planet looked up and photographed a ...

Astronomers discover water-ice clouds on a cold exo-Jupiter planet, Epsilon Indi Ab, advancing the search for Earth-like ...

Idaho does not bother with a warm-up, it just throws open the curtain and starts showing off. A drive here can feel like ...

This series of images shows NASA's Curiosity Mars rover as it got a rock stuck to the drill on the end of its robotic arm, ...

Perspective: Donald Trump’s UFO tease risks another letdown: big promises, thin proof and a base primed for betrayal.

A backyard astrophotographer discovered a new galaxy with a 2MP camera. A 14-year-old unearthed a supernova by combing ...

As a film critic of 20 years and a film lover of at least 20 more, I don’t even want to guess how many of the damn things ...

Viral posts link deaths and disappearances to UFO programs and nuclear secrets. Here’s what’s known — and what doesn’t hold ...