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

Newly discovered object is so strange that we don’t know what to call it, astronomers say - Object might be the first moon ever spotted outside of our solar system ...

Scientists have discovered a unique planetary system located 71 light-years away, featuring a red dwarf star orbited by a ...

A newly discovered object in a distant solar system doesn't fit neatly into the current definitions of moon or planet.

Astronomers directly imaged a Jupiter-mass object orbiting a brown dwarf 72 light-years away, making it the strongest candidate yet for the first known exomoon.

And it's not orbiting a planet.

Most people have heard of shooting stars, but those aren’t actually stars. They are tiny pieces of rock burning through Earth’s atmosphere. A real star traveling through space at extreme speeds would ...

Andrea Ghez developed a way to peer through dust clouds and observe stars orbiting the supermassive black hole at the center ...

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

Earth's orbit is getting crowded. About 16,000 satellites currently circle our planet, supporting everything from GPS navigation and weather forecasting to banking, emergency services and internet ...