The Crab Nebula is actually a remnant of a supernova and contains a pulsating star in its center. A supernova is actually an exploding star. What makes this particular nebula so interesting is that it was observed and recorded by Chinese astronomers as early as 1045 AD.
2 comments:
Awesome, mysterious void.
http://www.youtube.com/watch?v=nYZnfqKfdxk
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