Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf ...

Astronomers have been scanning the skies for alien radio signals for decades, but so far they’ve heard nary a peep (with one possible exception). But according to a recent study, that could be because ...

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

Rings of comets have been discovered around 74 alien star systems, revealing not only the existence of trillions of icy exocomets, but also the source of most of the water in these systems. The ...