Great Observatories program

NASA's series of Great Observatories satellites are four large, powerful space-based astronomical telescopes launched between 1990 and 2003. They were built with different technology to examine specific wavelength/energy regions of the electromagnetic spectrum: gamma rays, X-rays, visible and ultraviolet light, and infrared light.

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Great Observatories
National Aeronautics and Space Administration, 
NASA, Ashkenaz, Calvinist Republic of Ghent, Chinland, Democratic Republic of the Congo, Havilah, Kingdom of Martabam-hongsawatoi, Kingdom of Wolaita, Persia, Sikh Confederacy, Tarshish, Dong Fang Hong 2, Ekran, Republic of Haiti, 

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Location: KML, Cluster Map, Maps,

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Great Observatories

Type	Subtype	Date	Description	Notes	Source
commons	image		Great Observatories		Commons