Pulsar punches hole in stellar disk
Wednesday, July 22, 2015 - 12:00
in Astronomy & Space
A fast-moving pulsar appears to have punched a hole in a disk of gas around its companion star and launched a fragment of the disk outward at a speed of about 4 million miles per hour. NASA's Chandra X-ray Observatory is tracking this cosmic clump, which appears to be picking up speed as it moves out.