Tagged imperial stout

The wizened old fellow on the label, presumably Old Rasputin himself, proclaims an old Russian proverb "A close friend is not made quickly". He's referring to the beer and warning the drinker that imperial...

There it was sitting in front of me. My very own and very first black hole. A little piece of Swarzschild's solution to the 16 partial differential equations that make up the theory of general relativity. It...