Orbiting Astronomical Observatory

The Orbiting Astronomical Observatory (OAO) satellites were a series of four American space observatories launched by NASA between 1966 and 1972, managed by NASA Chief of Astronomy Nancy Grace Roman. These observatories, including the first successful space telescope, provided the first high-quality observations of many objects in ultraviolet light. Although two OAO missions were failures, the success of the other two increased awareness within the astronomical community of the benefits of space-based observations, and led to the instigation of the Hubble Space Telescope.

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OAO
space telescope, 
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"The Mother of Hubble," Nancy Grace Roman was NASA's first Chief of Astronomy and was instrumental in making the Hubble Space Telescope a reality. Dr.

Type	Subtype	Date	Description	Notes	Source
commons	image		"The Mother of Hubble," Nancy Grace Roman was NASA's first Chief of Astronomy and was instrumental in making the Hubble Space Telescope a reality. Dr.		Commons