Remains of a massive star
Located at 163.000 light-years, in th Large Magellanic Cloud, it is the first gamma-ray pulsar detected in a galaxy outsite the Milky Way, which made it the farthest object known of this kind. This neutron star, that spins nearly 62 times a second, is the what is left after a massive star exploded one thousand years ago. The observation of a so young and powerful pulsar should enable to better understand the origine of their luminosity.
This discovery, made thanks to NASA's Fermi satellite, was published in Science on November 13, 2015.