Orbiting Astronomical Observatory

American  

noun

1. OAO.

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Example Sentences

Fifty years ago, on December 7, 1968, that idea culminated in NASA’s launch of the first successful space-based observatory: the Orbiting Astronomical Observatory, or OAO-2.

From Scientific American

After examining data transmitted from OAO-II, its second Orbiting Astronomical Observatory�which is still functioning effectively after a year in space �NASA this month declared that "astronomers are contemplating the possibility that the universe may be several times larger than previously believed."

From Time Magazine Archive

NASA's apparent error in cosmological calculations in no way detracts from the splendid performance of the Orbiting Astronomical Observatory.

From Time Magazine Archive

At full blast, Saturn will ride on a 1,500,000?lb. push, making it the basic vehicle for Von Braun's hopeful space-flight timetable: 1960, first suborbital astronaut flight; 1961, manned orbital flight and a moon shot with scientific payload; 1962, first space probe in the vicinity of Mars and/or Venus; 1963-64, controlled landing on the moon and an orbiting astronomical observatory; 1964, unmanned lunar circumnavigation and first launching of a three-stage Saturn; 1965-67, beginning of manned circumlunar program and establishment of a permanent space station; after 1970, manned flight to the moon.

From Time Magazine Archive

The fresh view of the universe was made possible by the successful launching of the Orbiting Astronomical Observatory, which began probing the heavens with eleven telescopes while circling the earth in a 480-mile-high orbit�well above the confining atmosphere.

From Time Magazine Archive