A black hole is baisicly thought to be the last evolutionary stage of massive stars-at least fifteen times as massive as the Sun. ... He found that the uncertainty principle, which says that particles cannot have both a well-defined position of a particle and a well-defined velocity, allows particles to travel faster that light for a short distance, enabling particles and radiation to get out through the event horizon and escape out of a black hole. ...

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• Approx Pages: 4
• Grade Level: High School