Every Black Hole Might Hold a Universe

“We could be living inside a black hole. This head-spinning idea is one cosmologist’s conclusion based on a modification of Einstein’s equations.” The New Scientist on some very new astronomy. “In an analysis of the motion of particles entering a black hole, published in March, Nikodem Poplawski of Indiana University in Bloomington showed that inside each black hole there could exist another universe. ‘Maybe the huge black holes at the centre of the Milky Way and other galaxies are bridges to different universes,’ Poplawski says. If that is correct—and it’s a big ‘if’—there is nothing to rule out our universe itself being inside a black hole.”