Astronauts on the International Space Station were not only treated to a sight from Earth's atmosphere recently but also ...

LEDA 1313424, aptly nicknamed the Bullseye, is two and a half times the size of our Milky Way and has nine rings — six more than any other known galaxy. High-resolution imagery from NASA’s Hubble ...

New XRISM X-ray observations reveal details of gas near a supermassive black hole in galaxy MCG–6-30-15, helping scientists better measure black hole spin and behavior ...