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20 greatest astronomers, ranked

These are 20 of the greatest astronomers of all time, beginning with the Charles Messier, the French Comet hunter.

Greek islandUnited statesUnited kingdomCollege observatoryRadcliffe collegeHarvard universityLowell observatoryChristian dopplerVesto slipherAtlantic oceanGalileo galileiWikimedia commonsBarbaraa williamsMichaele bakichJohannes keplerKing frederick

Meet 20 great astronomers who made the history books

Meet 20 great astronomers who made the history books
astronomy.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from astronomy.com Daily Mail and Mail on Sunday newspapers.

Lowell observatoryUnited statesGreek islandRadcliffe collegeCollege observatoryHarvard universityUnited kingdomJohnd krausWilliamina flemingHarlow shapleyNicolaus copernicusWilliam herschelAtlantic oceanNiels bohrAlbert einsteinKarl guthe jansky