Definition of Crab Nebula in English:

Crab Nebula

Line breaks: Crab Neb¦ula
Astronomy
An irregular patch of luminous gas in the constellation Taurus, believed to be the remnant of a supernova explosion seen by Chinese astronomers in 1054. At its centre is the first pulsar to be observed visually, and the nebula is a strong source of high-energy radiation.

Definition of Crab Nebula in:

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Word of the day ween
Pronunciation: wēn
verb
be of the opinion; think or suppose