The Orbiting Astronomical Observatory (OAO) satellites were a series of four American space observatories launched by NASA between 1966 and 1972, [1] managed by NASA Chief of Astronomy Nancy Grace Roman.

2023年9月1日 · NASA’s OAO (Orbiting Astronomical Observatory) program was a series of four satellites that launched between 1966 and 1972, two of which were successful. These missions included OAO 2 (Stargazer) and OAO 3 (Copernicus), the direct ancestors of Hubble, Chandra, Swift, and many other astronomy satellites.

2023年1月9日 · NASA’s OAO program was a series of four satellites that launched between 1966 and 1972, two of which were successful. These missions included OAO-2 and OAO-3, the direct ancestors of Hubble, Chandra, Swift, and many other astronomy satellites. An illustration of one of NASA's OAO spacecraft.

Orbiting Astronomical Observatory (OAO), any of a series of four unmanned U.S. scientific satellites developed to observe cosmic objects from above the Earth’s atmosphere. OAO-1 was launched on April 8, 1966, but its power supply failed shortly after liftoff.

2018年12月11日 · Formally known as the Orbiting Astronomical Observatory (OAO) 2 and nicknamed Stargazer, it would become NASA’s first successful cosmic explorer and the direct ancestor of Hubble, Chandra, Swift, Kepler, FUSE, GALEX and many other astronomy satellites.

The Orbiting Astronomical Observatory 2 (OAO-2, nicknamed Stargazer) was the first successful space telescope (first space telescope being OAO-1, which failed to operate once in orbit), launched on December 7, 1968. [3] An Atlas-Centaur rocket launched it into a nearly circular 750-kilometre (470 mi) altitude Earth orbit. [4]

The Orbiting Astronomical Observatory (OAO) satellites were a series of four American space observatories launched by NASA between 1966 and 1972, [1] managed by NASA Chief of Astronomy Nancy Grace Roman.

The launch of the Orbiting Astronomical Observatory 2 on Dec. 7, 1968, into a 480-mile-high orbit marked a signature event in the history of astronomy, surmounting the obscuring blanket of the Earth’s atmosphere and giving people their first sustained view of the cosmos from space.

The First Successful Oribiting Astronomical Observatory: OAO-2 operated from 1968 to 1972 and obtained low-resolution UV spectra and broad-band photometric observations of many classes of astronomical objects. The 2012 kg satellite is shown here in a …

Since the early years of spaceflight, the advantages of astronomical observing above the Earth's atmosphere were recognized, and led to the introduction of astronomical instruments on spacecraft, i.e., astronomical observatories in space (in most cases, in Earth's orbit).