A distant 'exomoon' the size of Jupiter is changing how we think about the cosmos.

Have astronomers observed the first exomoon, or have they spotted a weird object that could challenge the very concept of ...

In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere ...

Since the first planet beyond our solar system was confirmed in the 1990s, astronomers have gone on to catalogue more than ...

Astronomers have discovered a rare planetary system 71 light-years away, where a Jupiter-sized world orbits a brown dwarf, ...

Barnard’s Star hosts four hostile small planets whose unusual chemistry and orbital rhythm reveal how compact planetary systems can form and survive.

On August 12, 2026, lucky viewers in and around Greenland, Iceland and Spain—weather allowing—will be able to see one of ...

Are we alone in the universe? For scientists working on NASA's proposed Habitable Worlds Observatory, that question is no ...

The curious minds at What If explore whether every planet in our solar system could have a twin.

A rocky world orbiting within its star’s habitable zone may be surrounded by a helium-rich atmosphere, providing the ...

August 2026 will give the inhabitants of the Earth the opportunity to see a rare large parade of planets — a phenomenon that ...