‘Under Alien Skies’ imagines what the sky looks like on other planets
Weird black holes may hold secrets of the early universe
Our galaxy’s heart is a gluttonous monster. Like the mythical Kammapa of the Sotho people of southern Africa, the Milky Way’s central, supermassive black hole has swallowed nearly everything around it, growing heftier and heftier the more it eats. And it’s not alone. Black holes weighing as much as thousands, millions or even billions of […]