Crab nebula (M1, NGC 1952) — An Etymological Dictionary of Astronomy and Astrophysics

Crab nebula (M1, NGC 1952)

میغ ِ خرچنگ

miq-e xarcang

Fr.: Nébuleuse du Crabe

An expanding cloud of debris from the explosion of a → Type I supernova in the → constellation → Taurus. Its light reached Earth in 1054 and
was visible to the naked eye even in the daytime. Lying about 6,300 → light-years away, the Crab nebula is an intense → radio source (Tau A), and also a source of X-rays and gamma-rays. The diameter of the → supernova remnant is about 6 light-years; it is expanding at velocity of 1000 km/sec.

See also: → crab; → nebula.

An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک