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	History in a Hurry: NASA's Four Great Observatories (HistoryInAHurry) View
	History of Observatories (History Of) View
	Top 5: Ancient Observatories - Space Documentary (DEEP SPACE TV) View
	The History Of Telescopes: From Galileo To Hubble (Insane Curiosity) View
	The History Of The Royal Observatory (The History Lord) View
	The Worlds Biggest Telescopes Through History - From Galileo to Gran Telescopio Canarias (Scott Manley) View
	The Fascinating History and Evolution of Telescopes (BRIGHT HOLE) View
	The Ancient Astronomical Observatories: Highlight ancient observatories around the world. ( Entertaining History) View
	Telescopes: Crash Course Astronomy #6 (CrashCourse) View
	Ancient Observatories (Pt 2): Observatories (NASAconnect) View