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发帖数: 1994 | 1 The Dumbbell Nebula in Hydrogen and Oxygen
Credit & Copyright: George Jacoby (NOAO) et al., WIYN, AURA, NOAO, NSF
Explanation: The first hint of what will become of our Sun was discovered inadvertently in
1764. At that time, Charles Messier was compiling a list of "annoying" diffuse objects not to
be confused with "interesting" comets. The 27th object on Messier's list, now known as M27
or the Dumbbell Nebula, is a planetary nebula, the type of nebula our Sun will produce when
nuclear fusion |
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