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 ...

As two distant galaxies trade blows in an ancient duel billions of years old, one belligerent has clearly proven they're more ...

Cosmic Himalayas Quasar Cluster. The background image is from Hyper Suprime-Cam on the Subaru Telescope. The yellow and blue ...

Observations show a stronger galaxy piercing a weaker one with a lance of radiation, reducing its star-making ability.