Black holes seem like the stuff of science fiction, but the reality behind these astronomical objects is even more peculiar. So strong is the gravity within a black hole not even light cannot escape it, but that is just one piece of the puzzle. The science behind black holes is notoriously complex, ...

Black holes seem like the stuff of science fiction, but the reality behind these astronomical objects is even more peculiar. So strong is the gravity within a black hole not even light cannot escape it, but that is just one piece of the puzzle. The science behind black holes is notoriously complex, but this concise introduction from astronomer Dr Ed Bloomer reveals how some general principles form the basis of our understanding of them, before exploring the possibilities of time travel, wormholes and spaghettification (not as tasty as it sounds!).