For the first time scientists have combined the powers of NASA's Chandra and Webb Space Telescopes to study the famous supernova remnant Cassiopeia A, helping to solve the mystery behind the remnant's "Green Monster".

These four images represent a sample of galaxy clusters that are part of the largest and most complete study to learn what triggers stars to form in the universe's biggest galaxies.

A group of dead stars known as "spider pulsars" are obliterating companion stars within their reach.

Astronomers found the most distant black hole ever detected in X-rays using the Chandra and Webb telescopes.

Chandra's data of MSH 15-52 have been combined with data from NASA's newest X-ray telescope, IXPE to unveil the magnetic field "bones" of this remarkable structure.

Using snapshots taken over 20 years with NASA's Chandra X-ray Observatory, astronomers have learned important new details about an eruption from Eta Carinae witnessed on Earth in the mid-19th century.

A new collection of stunning images highlights data from NASA's Chandra X-ray Observatory and other telescopes.

Astronomers using NASA's Chandra, ESA's XMM-Newton, and other telescopes have determined that a giant black hole has destroyed a large star and strewn its contents into space.

Astronomers have discovered the most distant galaxy cluster with an important quality — providing insight into how these gigantic structures formed and why the universe looks like it does in the present day.

Three new 'sonifications' of NASA data have been released: R Aquarii, Stephan’s Quintet, and M10.