See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A long-standing astronomical mystery about the first-ever discovered ...

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.

The first "failed star" was discovered in 1995, but it was far too dim. The explanation is now astonishingly simple – and raises new questions. Almost 30 years after the discovery of the first "failed ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A well-studied cosmic ...

A mysterious object in our sky, Gliese 229 B, continues to intrigue astronomers. Recent revelations about its hidden identity are shaking up the world of astronomy. Astronomical discoveries often ...