Carbon atmosphere discovered on neutron star

		IMAGE: New evidence from Chandra suggests that the neutron star at the center of the Cas A supernova remnant has an ultra-thin carbon atmosphere. This uniform carbon atmosphere would explain the... Click here for more information.

Evidence for a thin veil of carbon has been found on the neutron star in the Cassiopeia A supernova remnant. This discovery, made with NASA's Chandra X-ray Observatory, resolves a ten-year mystery surrounding this object.