Crab Nebula

Crab Nebula

noun Astronomy.
the remnant of a supernova explosion, observed in 1054 a.d., in the constellation Taurus.

Origin:
1885–90
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Crab Nebula is always a great word to know.
So is planet. Does it mean:
any of various groups of stars to which definite names have been given and the section of the heavens occupied by such a group, such as Ursa Major, Andromeda
any of the nine large heavenly bodies revolving about the sun and shining by reflected light: a similar body revolving about a star other than the sun
Collins
World English Dictionary
Crab Nebula
 
n
the expanding remnant of the supernova observed in 1054 ad, lying in the constellation Taurus at an approximate distance of 6500 light years

Collins English Dictionary - Complete & Unabridged 10th Edition
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