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

Type	Subtype	Date	Description	Notes	Source
commons	image		Great Observatories		Commons