A hole that is less than the sum of its parts. Three suns’ worth of mass has been turned into energy, in the form of gravitational waves; The coalescing holes

A hole that is less than the sum of its parts. Three suns’ worth of mass has been turned into energy, in the form of gravitational waves; The coalescing holes pumped 50 times more energy into space this way than the whole of the rest of the universe emitted in light, radio waves, X-rays and gamma rays combined.