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Astrophysics: Fire in the hole!

Will an astronaut who falls into a black hole be crushed or burned to a crisp?

In March 2012, Joseph Polchinski began to contemplate suicide — at least in mathematical form. A string theorist at the Kavli Institute for Theoretical Physics in Santa Barbara, California, Polchinski was pondering what would happen to an astronaut who dived into a black hole. Obviously, he would die. But how?