Far beyond Neptune lies a vast and unsettling frontier filled with dwarf planets, ancient ice worlds, collapsing atmospheres, ...

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

"Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the ...

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

When the object now known as 1I/ʻOumuamua streaked through the inner Solar System in 2017, it instantly rewrote the playbook ...