A supermassive black hole in a distant disk galaxy is behaving badly, and the fallout is rewriting what I thought I knew ...

Astronomers have obtained the sharpest-ever X-ray spectrum of an iconic active galaxy, providing the most accurate, precise ...

The fast-moving gas cloud could help explain the so-called missing satellite problem, if the object is what scientists think it is. Reading time 2 minutes Astronomers may have just stumbled across a ...