The first brown dwarf, called Gliese 229B, was discovered in 1995, but its mass was inexplicably large, says Jerry Xuan at the California Institute of Technology.

In 1995, a parallel race was on in astronomy - one to find the first planet beyond our own solar system, and the other to find the first brown dwarf, a class of object too heavy to be a planet ...

The first and most famous "failed star" discovered by humanity isn't one brown dwarf, but two! The duo comprising Gliese 229B are so tightly bound they orbit each other in 12 days.

So the brown dwarf that three decades ago was named Gliese 229B is now recognized as Gliese 229Ba, with a mass 38 times greater than our solar system's largest planet Jupiter, and Gliese 229Bb ...

Astronomers have spotted brown dwarf pairs before, but these two whip around at much closer range. They orbit each other every 12 days, less than the time it takes for the moon to circle the Earth.

An international team of astronomers has figured out that a famous brown dwarf is actually a pair of tight-knit brown dwarfs, weighing about 38 and 34 times the mass of Jupiter, that whip around ...

It is rare to find brown dwarf stars orbiting in pairs, and this pair has an even more unusual exoplanet companion By Karmela Padavic-Callaghan 16 April 2025 ...

This illustration depicts the orbits of brown dwarf twins, Gliese 229Ba and Gliese 229Bb, with a separation only 16 times larger than the distance between Earth and the moon. (K. Miller, R. Hurt ...

NEW YORK (AP) — A celestial object discovered decades ago is actually twins orbiting each other, a new study confirms. Scientists have puzzled over the object known as Gliese 229B, the first ...

The twins orbit a small star about 18 light-years away. A light-year is 5.8 trillion miles. Astronomers have spotted brown dwarf pairs before, but these two whip around at much closer range.