Example image of eyePlorer eyePlorer map for 'Pierre Janssen': Astronomy Helium Joseph Norman Lockyer Mathematics Physics Architecture Eclipse Solar prominence Chromosphere Spectroscopy Sun Wavelength Edward Frankland Oxygen Earth's atmosphere Mont Blanc Meudon Père Lachaise Cemetery Impact crater Ernest Grandidier Alfred Grandidier Janssen (surname) 1868 in France 225 Henrietta Henri-Alexandre Deslandres List of people from Guntur Timeline of solar astronomy List of astronomers August 18 1860s Milan Rastislav Štefánik Noble gas Period 1 element 1868 Château de Meudon February 22 List of multiple discoveries 2007 in the Netherlands Guntur
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