Uranus, the first planet discovered in modern times, has the poetic name of the Greek god of the heavens. In the English language, it is, unfortunately, the literal butt of every astronomy joke and I’m afraid that this latest discovery will make things worse. Astronomers have discovered that the upper atmosphere of Uranus is dominated by hydrogen sulfide, a molecule that smells like rotten eggs and is often found in human flatulence. I’ll give you a moment to crack a few jokes. ...