Omnivorous Black Holes Like This One Are Pretty Much the Sharks of Space
Black Hole Devouring Star NASA, S. Gezari (JHU), and J. Guillochon (UC Santa Cruz) Scientists from the Harvard-Smithsonian Center for Astrophysics and Johns Hopkins University report seeing a phenomenon we've all imagined: a black hole devouring a star. A black hole at the center of a galaxy about 2.7 billion light-years away, one about the same size as the black hole at the center of our own Milky Way, was observed sucking the life out of a star. Interestingly, the scientists who observed the black hole's meal compared it to a shark: neither, says Ryan Chornock of Harvard-Smithsonian, are unstoppable eating machines. Black holes actually lie dormant for long periods of time, until a space object passes a little too close--and then it pounces, which can set off a feeding frenzy. This particular star, probably a red giant, had already once passed too close to the black hole, losing...