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(From Wikipedia, the free Encyclopedia)

This object was the first planetary to be discovered, by Charles Messier in 1764. At its brightness of visual magnitude 7.4 and its diameter of about 8 arc minutes, it is easily visible in binoculars, and a great observing target in amateur telescopes.
It is estimated that the Dumbbell nebula is about 3,000 to 4,000 years old.
Source: the above text is adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Dumbbell Nebula."
Copyright © Philip M. Parker, INSEAD. Terms of Use.