Thor Agena A | Discoverer 3
Launch Failure
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Instantaneous launch window.
Launch Window
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Instantaneous launch window.
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The Discoverer 3 reconnaissance satellite failed to reach orbit due to a failure of the Agena A upper stage.
Thor-Agena was a series of orbital launch vehicles. The rockets used Thor first stages and Agena second stages. They are thus cousins of the more-famous Thor-Deltas, which founded the Delta rocket family.
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