A new study of super-fast-moving stars suggests that they were accelerated by a monster black hole that's been lurking unseen in the galaxy next door. This appears to be the closest supermassive black ...

With images from the Hubble Space Telescope, we have new information here in the Milky Way about our closest neighboring galaxy, Andromeda. Researchers unveiled the most comprehensive survey of the ...

A massive filament of gas and dust, designated X7, has been elongated during its long approach to the Milky Way galaxy's supermassive black hole Sagittarius A*. See W.M. Keck Observatory imagery of X7 ...

An artists impression of a black hole flinging a hypervelocity star out of the Large Magellanic Cloud. (CfA/Melissa Weiss) A new study of super-fast-moving stars suggests that they were accelerated by ...