The Orbiting Astronomical Observatory (OAO) satellites were a series of four American space observatories launched by NASA between 1966 and 1972, managed...

The Orbiting Astronomical Observatory 2 (OAO-2, nicknamed Stargazer) was the first successful space telescope (first space telescope being OAO-1, which...

1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched in 1968, and the Soviet Orion 1 ultraviolet...

Copernicus or OAO-3 (Orbiting Astronomical Observatory 3), also mentioned as Orbiting Astronomical Observatory-C, was a space telescope intended for ultraviolet...

nationalists understand it, he was neither." The third in NASA's Orbiting Astronomical Observatory series of missions, launched on 21 August 1972, was named...

This is a partial list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location...

(such as Public health observatory) or for a particular geographic area (European Audiovisual Observatory). Astronomical observatories are mainly divided...

The Lick Observatory is an astronomical observatory owned and operated by the University of California. It is on the summit of Mount Hamilton, in the Diablo...

The Orbiting Frog Otolith (OFO) was a NASA space program which sent two bullfrogs into orbit on November 9, 1970, for the study of weightlessness. The...

NASA's series of Great Observatories satellites are four large, powerful space-based astronomical telescopes launched between 1990 and 2003. They were...