Pioneer anomaly [SEP] named after
Pioneer anomaly
The Pioneer anomaly or Pioneer effect was the observed deviation from predicted accelerations of the "Pioneer 10" and "Pioneer 11" spacecraft after they passed about on their trajectories out of the Solar System. The apparent anomaly was a matter of much interest for many years but has been subsequently explained by an anisotropic radiation pressure caused by the spacecraft's heat loss.
Both "Pioneer" spacecraft are escaping the Solar System but are slowing under the influence of the Sun's gravity. Upon very close examination of navigational
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This family's first documented ancestor was Nicolas Bonhomme, born about 1562 in St-Croix de Féca, Normandie, France. He married there with Marie Guyon. They had a son, also named Nicolas, in 1603. This son became the family's pioneer ancestor. As an adult, he emigrated to New France--later named Québec, Canada--where he married on 2 Sep 1640 at St-Laurent, Ile d'Orleans with a woman named Catherine Gouget, a "Fille du Roi", from Bourg