Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

Interstellar comet 3I/ATLAS has steadily been making its exit ever since it had a rendezvous at the end of October with the sun.

The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's observations.

Aliens exist – they just haven't visited Earth, a NASA veteran has claimed. Dr Gentry Lee has worked at the US space agency since 1968, when he first got involved with the Viking mission to Mars. He ...

If you've been following exoplanet research over the last couple of years, you've definitely heard of K2-18b. Located 124 ...

This piece examines the parallels between sci-fi concepts and current technological achievements, emphasizing the ongoing journey from imagination to reality and pondering ...

How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think ...

Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, ...

Barack Obama has clarified a recent interview in which he said aliens are “real,” insisting he saw “no evidence” that ...

With Area 51 ruled out by President Obama, where might aliens really be hiding? Scientists have now revealed the best candidates.