A gamma-ray binary discovered in the Large Magellanic Cloud, a dwarf galaxy approximately 163,000 light-years away, is the first object of its kind ever found in a galaxy other than the Milky Way and is the most luminous one ever seen. LMC P3 (circled) is located in the supernova remnant DEM L241 in the Large Magellanic Cloud. Image credit: NASA’s Goddard Space Flight Center. Gamma-ray binaries contain either a neutron star or a black hole and radiate...
