The Chandra X-ray Observatory is the world's most powerful X-ray telescope. It has eight-times greater resolution and is able to detect sources more than 20-times fainter than any previous X-ray telescope.
A powerful collision of galaxy clusters is seen by Chandra and Hubble.
How do you weigh the biggest black holes in the universe? One answer can be found with data from NASA's Chandra X-ray Observatory.
The biggest black holes may feed just like the smallest ones, according to data from NASA's Chandra X-ray Observatory.