Talk about a heavy snack. For the first time, astronomers have witnessed a black hole swallowing a neutron star, the most dense object in the universe—all in a split-second gulp.
Ten days later they saw the same thing, on the other side of the universe. In both cases, a neutron star—a teaspoon of which would weigh a billion tons—orbits ever closer to that ultimate point of no return, a black hole, until they finally crash together and the neutron star is gone in a gobble.
