Orbiting Solar Observatory

The Orbiting Solar Observatory Program was the name of a series of American space telescopes primarily intended to study the Sun, though they also included important non-solar experiments. Eight were launched successfully into low Earth orbit by NASA between 1962 and 1975 using Delta rockets. Their primary mission was to observe an 11-year sun spot cycle in UV and X-ray spectra.

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OSO; OSO-4
space mission, NASA program, 

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Frameless

Nancy Grace Roman at Console (41304996424)

A model of the Advanced Orbiting Solar Observatory.

Type	Subtype	Date	Description	Notes	Source
commons	image		Nancy Grace Roman at Console (41304996424)		Commons
commons	image		A model of the Advanced Orbiting Solar Observatory.		Commons