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.
Evidence for a thin veil of carbon has been found on the neutron star in the Cassiopeia A supernova remnant.
The most distant galaxy cluster yet has been discovered -- about 10.2 billion light years away.
A new study from two of NASA's Great Observatories provides fresh insight into how some stars are born.