Pioneer Anomaly on the Verge of Solution - What We Do | The Planetary Society

cientists working with recovered data from the Pioneer 10 and 11 missions are closing in on a solution to the famous Pioneer Anomaly. Their just-published results show that the mysterious effect on the two spacecraft is not constant over time, probably indicating that no outside force is acting on the Pioneers, but rather, something inside the spacecraft is to blame.

Slava Turyshev and a team of researchers are publishing an upcoming issue of Physical Review Letters their analysis of radio transmission data from the spacecraft. (The article is available on-line.) Their work strengthens the case that the source of the anomaly lies in the spacecraft themselves, not in any mysterious outside force acting on them. The most likely cause is heat generated by spacecraft systems, producing a recoil force."

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