Find out why this gigantic black hole is on the run.
Scientists have discovered that the mysteriously flickering galaxy is not being fed enough material to make it shine brightly.
Scientists have discovered a cloud of gas and dust giving birth to stars reflecting X-rays from the binary X-ray Cygnus X-3.
The Chandra X-ray Observatory detected an ultraluminous x-ray source that emits low, medium and high-intensity flares.
NASA's Chandra X-ray Observatory has discovered a galaxy cluster 11.1 billion light-years away from Earth.
NASA developed the “AstrOlympics” project, which likens Olympic athletes to objects in space.
Data from the Hubble Space Telescope and two more telescopes by NASA and ESA were studied by Italian astrophysicists.
An astronomy team recently looked at a "tidal disruption" that involved a black hole ripping up a star. They measured the spectrum of X-rays that resulted from this large space event.
Dark matter: unless you're a theoretical physicist, you probably will have a hard time explaining just what this mysterious thing in our Universe really is. Even experts have long viewed the material as one giant question mark looming over blackboards and telescopic lenses. Now, a new discovery has made things even more complicated. Dark matter, as it turns out, barely even interacts with itself, explaining why it is so undetectable.