Twirling pair Artist’s impression of Gliese 229Ba and Gliese 229Bb orbiting each other to create Gliese 229B. The brown dwarf pair orbit a cool M-dwarf star (shown in the distance) every 250 years.

A well-studied cosmic object has stunned astronomers. The "failed star" Gliese 229B has been revealed to be two so-called "brown dwarfs" that are closely orbiting each other rather than just one. The ...

WASHINGTON (Reuters) - In 1995, astronomers confirmed the discovery for the first time of a brown dwarf, a body too small to be a star and too big to be a planet - sort of a celestial tweener. But it ...

Brown dwarfs are objects that straddle the dividing line between stars and planets. They form like stars, growing dense enough to collapse under their own gravity, but they never become dense and hot ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NEW YORK (AP) — A celestial object ...

Astronomers recently spotted one of the most massive brown dwarfs known, an object between 75 and 90 times the mass of Jupiter with a beyond-scalding dayside temperature of 8,000 K (13,940° Fahrenheit ...

A new image from the James Webb Space Telescope shows a stunning view of a star cluster that contains some of the smallest brown dwarfs ever identified. A brown dwarf, also sometimes known as a failed ...

Peppered throughout the universe are balls of gas that never got promoted to stardom. In a strange twist, evidence has just emerged that the most famous of these orbs is actually a double-act. Where ...

Subscribe to our newsletter for the latest sci-tech news updates. In our Milky Way galaxy, the most common type of star is the small, cool star known as an M dwarf, or red dwarf. They make up more ...