Crab Nebula, optical image

Crab Nebula, optical image

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Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona/SCIENCE PHOTO LIBRARY

Caption: Crab Nebula. Optical image of the Crab Nebula, the remnant of a supernova. In the centre of the supernova remnant is the remains of the star's core, which has formed a pulsar, or neutron star, rotating 30 times a second and emitting regular pulses of radiation. When a large star dies, gas shells explode outwards and collide with interstellar material. The energy of the collision ionises the gas, causing it to glow. The Crab Nebula lies 6000 light years from Earth in the constellation Taurus.

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Keywords: astronomical, astronomy, astrophysical, astrophysics, crab nebula, gas, gases, m1, messier 1, nebula, neutron star, no-one, nobody, optical image, pulsar, space observation, star, starry, stars, supernova remnant

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