Explorer 23
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Explorer 23 was the last of three S-55 NASA micrometeoroid satellites launched as part of the Explorer program. Its purpose was to obtain data on the near-earth meteoroid environment, thus providing a
Explorer 23 satellite
Explorers Program
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The Explorers Program is a NASA exploration program that provides flight opportunities for physics, geophysics, heliophysics, and astrophysics investigations from space. Launched in 1958, Explorer 1 w
An Explorer mission observes Sagittarius A*, the Milky Way's central black hole, flaring.
Launch of Explorer 1 on the Juno I launch vehicle.
Explorer 1, the first Earth satellite orbited by the United States
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