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	Thirty Years of Earth Observations: from Explorer-1 (1958) to CYGNSS (2017) (NASA Scientific Visualization Studio) View
	Explorer-1 (1958) to CYGNSS (2017) (Cloud .Tube) View
	Launching of Explorer (NASA's Marshall Space Flight Center) View
	Explorer 1 Preparation and Launch, January 31, 1958 (Cape Canaveral Space Force Museum) View
	CYGNSS launch and early on orbit operations (cruf314) View
	Explorer 1: the first u.s. satellite (celebrity news) View
	Explorer 1 -- JPL and the Beginnings of the Space Age (NASA Jet Propulsion Laboratory) View
	Key Issues in Earth Observation (Geospatial World) View
	SciTech Now Shorts \| CYGNSS Phase Two (KLRNTV) View
	Explorer I 60th Anniversary (Army Materiel Command Headquarters) View