Scientists detected something unusual entering our Solar System two months ago, leading to speculation about whether it was a ...

If you were hoping we’d find alien life hanging out on a cozy, pint-sized planet anytime soon, then you should know that ...

Comets have played an interesting role in the history of astronomy. Since antiquity, many cultures saw them as omens or spirits, portending good or bad news for kings, queens and emperors. Over the ...

NASA researcher Heidi Becker has photographed sublime sights around Jupiter that have never been seen before, from its ...

In a new study, astronomers have revealed that a near-Earth asteroid discovered in 1998 is actually one such dark comet, with ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House scientific advisory council on UFOs.

"Our work shows that sugars can form naturally in space," says the lead author of this research ...

Avi Loeb’s White House panel has asked the Pentagon for videos and files on unexplained aerial sightings ...

Finding out about distant worlds and their potential for life is clearly on a lot of astronomers’ minds. The other thread we ...

For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as ...

Avi Loeb, Harvard astrophysicist known for bold alien theories, will lead a Trump administration-backed team investigating UFOs and their security risks.