NASA’s Chandra Captures X-Ray Echoes Pinpointing Distant Neutron Star

Astronomers using NASA’s Chandra X-ray Observatory have discovered the largest and brightest set of rings from X-ray light echoes ever observed. These extraordinary rings, produced by an intense flare from a neutron star, provide astronomers a rare chance to determine how far across the Milky Way galaxy the star is from Earth. via http://ift.tt/1fxZ1Dr