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M1, the "Guest Star", Stephen Kennedy

M1, the "Guest Star"

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M1, the "Guest Star", Stephen Kennedy

M1, the "Guest Star"

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Description

In 1054, Chinese astronomers observed what they called a “guest star” that was, for nearly a month, visible in the daytime sky. What they observed was actually a supernova explosion, which gave rise to the Crab Nebula, a six-light-year-wide remnant of the explosion. At the center of the nebula lies the Crab Pulsar, a neutron star that spins 30.2 times per second, which emits pulses of radiation from gamma rays to radio waves.

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M1, the "Guest Star", Stephen Kennedy