A small red dwarf star in the Milky Way has drawn attention after astronomers mapped four closely orbiting planets around it.

NASA's Pleiades supercomputer has provided fresh insights into the Oort cloud – a vast, theoretical spherical shell of icy objects that surrounds our solar system. For a long time, the Oort cloud's ...

The object at the Milky Way’s center has long been treated as a settled case: a supermassive black hole called Sagittarius A* ...

Our solar system passed through a vast wave of gas and dust around 14 million years ago, dimming Earth’s view of the night sky. The wave may even have left traces in our planet’s geological record.

A white dwarf spotted by the Gaia telescope was predicted to smash into our solar system in 29,000 years. But we'll be safe after all. When you purchase through links on our site, we may earn an ...

In February, the bright band of the Milky Way appears higher in our pre-dawn sky. Find out where and when to see it.

CAPE CANAVERAL, Fla. (AP) — Astronomers say they've spotted an object in our solar system that's believed to be from another part of the Milky Way galaxy. The European Space Agency says this is just ...