White Holes

Let us journey into the heart of a black hole. Let us slip beyond its boundary, the horizon, and tumble – on and on – down this crack in the universe. As we plunge, we’ll see geometry fold, we’ll feel the equations draw tight around us. Eventually, we’ll pass it: the remains of a star, deep and dense and falling further far. And then – the bottom. Where time and space end, and the white hole is born . . .