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OAO-2

OAO-2, nicknamed Stargazer, was NASA’s first successful cosmic observatory and the second Orbiting Astronomical Observatory. Launched on 1968-12-07, its Celescope and Wisconsin Experiment Package made the first orbital stellar observations in ultraviolet light, catalogued thousands of UV stars, and studied planets, galaxies, comets, and interstellar extinction above Earth’s atmosphere.

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Identity

Aliases
OAO 2Orbiting Astronomical Observatory 2StargazerOAO A2
Name
OAO-2
Status
completed

Details

Astronauts
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Description
OAO-2, nicknamed Stargazer, was NASA’s first successful cosmic observatory and the second Orbiting Astronomical Observatory. Launched on 1968-12-07, its Celescope and Wisconsin Experiment Package made the first orbital stellar observations in ultraviolet light, catalogued thousands of UV stars, and studied planets, galaxies, comets, and interstellar extinction above Earth’s atmosphere.
Destination
Earth orbit
Outcome
NASA shut down OAO-2 operations in February 1973 after more than four years of successful ultraviolet and astronomical observations.
Programs
Start Date
1968-12-07
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Creation Time
August 15, 2026 at 06:54:34 UTC
Updated Time
August 15, 2026 at 06:54:34 UTC

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