The Crab Nebula

The Crab Nebula is a supernova remnant. Embedded within it is a radio pulsar.

  • The supernova was observed in 1054 A.D.

  • The supernova event was visible to the naked eye in the daytime; it was as bright as Venus.

  • The filaments in the nebula are seen to be expanding at 1000 km/sec.

  • The total mass of ejected material is about 0.1 solar masses.

  • The distance to the Crab Nebula is about 6500 light years.

  • The diameter of the remnant is 6 light years.

  • A pulsar was discovered in the center of the nebula in 1969.

  • The neutron star in the center of the Crab rotates 33 times per second.

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