Astronomers long thought that a peculiar star system observed by the European Space Agency's Gaia satellite was a simple case of a star orbiting a black hole. But now, two astronomers are challenging ...

Astronomers have reported observations of a rare star system consisting of one star orbiting a system of three more tightly bound stars. This quadruple star system is described in a new study, ...

A rare quadruple star system that is the first of its kind to be discovered by astronomers could help better understand so-called "failed stars" or brown dwarfs. These celestial bodies get their ...