Pioneer anomaly

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English[edit]

Etymology[edit]

Named after NASA space probes Pioneer 10 and Pioneer 11.

Noun[edit]

Pioneer anomaly (countable and uncountable, plural Pioneer anomalies)

  1. (aerospace) The observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System.

Further reading[edit]

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