Dumbbell Nebula
charles messier
['james dunlop', 'eric elst', 'james watt', 'nanking', 'blackberry', 'noam chomsky', 'karl reinmuth', 'linear', 'lee de forest', 'hyperloop', 'pelageya shajn', 'rudolf diesel', 'gridshell', 'edwin hubble', 'sir winston churchill', 'donald knuth', 'humphry davy', 'lord rayleigh', 'alessandro malaspina', 'anselm', 'ernest rutherford', 'kant', 'thorstein veblen', 'carolyn shoemaker', 'max wolf', 'sylvain arend', 'robert luther', 'sir alexander fleming', 'malcolm mackerras', 'odin', 'indiana asteroid program', 'ole kirk christiansen', 'crimean astrophysical observatory', 'edwin mcmillan', 'michael brown', 'johann palisa', 'chad trujillo', 'henry holt', 'purple mountain observatory', 'claude chappe', 'emmett chapman', 'johan gadolin', 'george westinghouse', 'mikhail lazarev', 'tom gehrels', 'edward said', 'edward bowell', 'tycho', 'conway', 'albert einstein', 'karl drais', 'dmitri mendeleev', 'carl wirtanen', 'loneos', 'george maciunas', 'gotthold ephraim lessing', 'bill mollison', 'niels henrik abel', 'ingrid', 'sir arthur evans', 'lyudmila zhuravleva', 'lewis swift', 'hermann goldschmidt', 'harlow shapley', 'ward cunningham', 'icao', 'franz kaiser', 'robert bunsen', 'alexander grothendieck', 'james bradley', 'nikola tesla', 'gustav rose', 'werner heisenberg', 'christopher alexander', 'kin endate', 'nikolai chernykh', 'clyde tombaugh', 'egide walschaerts', 'heinrich ruhmkorff', 'ernest johnson', 'nicolas bourriaud', 'maurice martenot', 'eleanor helin', 'carl friedrich gauss', 'charles darwin', 'georg cantor', 'bartolomeo cristofori', 'seymour papert', 'takashi murakami', 'cyril jackson', 'vint cerf', 'sequoyah', 'august derleth', 'frederick scott archer', 'microsoft', 'carl gustav mosander', 'benjamin franklin', 'gerry anderson', 'bickley']
Dumbbell Nebula
The Dumbbell Nebula (also known as Apple Core Nebula, Messier 27, M 27, or NGC 6853) is a planetary nebula in the constellation Vulpecula, at a distance of about 1,360 light-years. This object was the first planetary nebula to be discovered; by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and its diameter of about 8 arcminutes, it is easily visible in binoculars, and a popular observing target in amateur telescopes.