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Glenn Chaple's Observing Basics: Feast on the winter crab

December 2010: A supernova blast seen in 1054 continues to dazzle in December skies.
crab_nebula
The Crab Nebula (M1) is one of the sky’s most famous targets. It’s an expanding cloud of gas and dust that represents the outer layers of a star that exploded in A.D. 1054.
Cliff Wright

Bonsoir mesdames et messieurs! Mon nom est Charles Messier, et je … Excusez-moi! I forget that you are primarily an English-speaking audience. Let me start again. Good evening ladies and gentlemen! My name is Charles Messier, and I am known throughout Europe as a comet-hunter par excellence.

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