Quite simply, when astronauts are sitting in the Space Shuttle, strapped to their seats and ready to go, they may experience very long delays. Sometimes even hours. And when that happens, they just can't get off their seats to go to the toilet. They just have to do it, as Alan Shepard discovered while waiting inside his Mercury capsule on May 5, 1961, waiting for theFreedom 7 mission launch. He was the first American to reach Space and the first astronaut to pee inside his suit.