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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

New NASA director takes oath with science book instead of Bible

Dr. Makenzie Lystrup was sworn in as director of the agency's Goddard Space Flight Center last April 6 and broke tradition by taking the oath

United statesCarl edward saganCarl saganJoseph backholmBill nelsonDave mitchellMariah parkerNeil armstrongSuzi levineMaryw jacksonMakenzie lystrupRobert popeRhuanc solettiMuseum of the bibleGoddard space flight centerJewish christian islamic god

EarthSky | Carl Sagan born 88 years ago today

EarthSky | Carl Sagan born 88 years ago today
earthsky.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from earthsky.org Daily Mail and Mail on Sunday newspapers.

New yorkUnited statesCornell universityDeath valleyWikimedia commonsFrank drakeLinda salzman saganEric burgessAnn druyanCarl edward saganCarl saganChuck berryHarvard universityCornell university in ithacaUniversity of chicagoEdward sagan

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