The Anomalous Trajectories of the Pioneer Spacecraft
Abstract
Because of their unique designs, the Pioneer 10 and 11 spacecraft have provided the cleanest Doppler, deep-space navigation data. Analysis of this data can be interpreted as showing an anomalous acceleration of these craft directed towards the Sun of aP 8 × 10-8 cm/s2. The background of this discovery and the significance of the result are discussed.
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