54: Black Hole Redemption

Our galaxy has a huge — you might even say *supermassive* — black hole at its centre. Turns out, so do most other large galaxies. Typically, black holes are portrayed as monstrous, pitch-black space beasts gobbling up stars and planets — but Emily is here to salvage their reputation. See, some supermassive black holes are special: called quasars, they emit stupendous jets of energy that stretch across intergalactic space, sending shockwaves into neighbouring galaxies that can kickstart new star formation. Black holes aren't all destruction and chaos!