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Indication, from Pioneer 10/11, Galileo, and Ulysses Data, of an Apparent Anomalous, Weak, Long-Range Acceleration

Anderson, John D.; Nieto, Michael Martin; Turyshev, Slava G. +3 more

Radio metric data from the Pioneer 10/11, Galileo, and Ulysses spacecraft indicate an apparent anomalous, constant, acceleration acting on the spacecraft with a magnitude ~8.5×10^-8 cm/s², directed towards the Sun. Two independent codes and physical strategies have been used to analyze the data. A number of potential causes ha…