Able space probes

The first three Able space probes were also called Thor-Able because they were launched on Thor booster rockets.Pioneer 0 (Thor-Able 1) called the Able 1 probe. (Pioneer) destroyed 77 seconds after launch due to ruptured tank.Pioneer 1 (Thor-Able 2) called the Able 2 probe. (Pioneer I) failed to enter earth escape orbit.Pioneer 2 (Thor-Able 3) called the Able 3 probe. (Pioneer II) failed to enter earth escape orbit.
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