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出典:Wikipedia
出典:『Wikipedia』 (2011/04/26 23:11 UTC 版)
The Calabash Nebula, also known as the Rotten Egg Nebula or by its technical name OH 231.84 +4.22, is a protoplanetary nebula (PPN) 1.4 light years (13 Pm) long and located some 5,000 light years (47 Em) from Earth in the constellation Puppis.
Calabash Nebula