Using NASA's Chandra X-ray space telescope, astronomers have discovered an entire galaxy cluster wrapped in a 20 million ...

A vast, glowing halo enveloping a galaxy cluster has been discovered, defying expectations and pointing to turbulent cosmic ...

A glowing supernova remnant ... that shine in 25 never-before-seen images captured by NASA’s Chandra X-ray Observatory to mark the telescope’s 25th anniversary. Chandra, named in honor ...

The stream of X-ray radiation remained effectively constant ... getting frazzled and glowing in X-rays. “We don’t know very much about how planetary systems behave after their star transitions ...

The combined image shows a blue aura around the cluster, a vast reservoir of gas seen glowing in X-ray light by the Chandra Observatory. “In this image, the Chandra data (blue) reveals gas with ...

Mountain high The cosmic-ray observatory on Armenia’s Mount Aragats. (Courtesy: Vahram Mekhitarian/CC BY-SA 4.0) Research done at a mountaintop cosmic-ray observatory in Armenia has shed new light on ...