Detective astronomers unearth hidden celestial gem
ESA’s orbiting X-ray observatory XMM-Newton has re-discovered an ignored celestial gem. The object in question is one of the youngest and brightest supernova remnants in the Milky Way, the corpse of a star that exploded around 1000 years ago.
esa.int/esaCP/SEM1OPUG3HF_index_0.html
