A mysterious object speeding across the universe might look like a UFO, but the real story is even more fascinating.

The symmetrical holes which lie more than 1.5 miles underneath the ocean surface have yet to be explained by scientists. That hasn't stopped cheeky social media users speculating that aliens have been ...

Newly declassified Pentagon UFO files have reignited debate over a possible alien presence on the Moon after a previously ...

Add Yahoo as a preferred source to see more of our stories on Google. As an astrophysicist, I've spent two decades modeling how black holes spin, how that creates jets, and how they affect the ...

One of the most powerful objects in the universe is a radio quasar – a spinning black hole spraying out highly energetic particles. Come too close to one, and you’d get sucked in by its gravitational ...