Count up all the stuff in a galaxy and you should have a pretty good understanding of how much light is being emitted. But that doesn’t seem to be the case for our own Milky Way. Our galaxy’s got a source of extra gamma rays, the highest-energy light, right in its center. And scientists don’t know where all that energy’s coming from.
Continue reading Scientists Think They Know What’s Behind Those Mysterious Gamma Rays in the Galactic Center