Astronomers have been recording the signal for more than four decades, but this is the first time they've nabbed its origin.

Using NASA’s Chandra X-ray Observatory and other telescopes, astronomers have found that a black hole that shredded a star has moved onto a another star or stellar black hole. Credit: NASA/CXC/A. Hoba ...

XRISM has uncovered how galaxy clusters evolve—violent mergers create turbulence, preventing hot gas from cooling. This ...

A not-so-distant white dwarf named WD 2226-210 has been on our radar since the 1980s for releasing X-rays, now we may know why ...