For example, it has been used to model the reflection of thermal radiation from the Pioneer probes in an attempt to explain the Pioneer anomaly.
According to Slava Turyshev of JPL in the paper "Support for temporally varying behavior of the Pioneer anomaly from the extended Pioneer 10 and 11 data sets," published in Physical Review Letters in 2011, the anomaly has a temporally-decaying (not constant as previously thought) nature and points towards Earth.
Pioneer | Pioneer 11 | pioneer | Pioneer Corporation | Pioneer 10 | St. Paul Pioneer Press | Pioneer Column | American pioneer | Pioneer program | Pioneer Valley Performing Arts Charter Public School | Pioneer Square | Ernst Thälmann Pioneer Organisation | Young Pioneer organization of the Soviet Union | Royal Pioneer Corps | Pioneer Zephyr | Pioneer Square, Seattle | Pioneer MRT Station | Pioneer Day | John Macarthur (wool pioneer) | James Williamson (film pioneer) | RSD-10 Pioneer | Pioneer Valley | Pioneer plaque | Pioneer Courthouse Square | Pioneer Anomaly | Pioneer anomaly | George Albert Smith (film pioneer) | Budd BB-1 ''Pioneer'' | Black Creek Pioneer Village | Anomaly detection |
He is known for his investigations of the Pioneer Anomaly, affecting Pioneer 10 and Pioneer 11 spacecraft, and for his attempt to recover early data of the Pioneer spacecraft to shed light on such a phenomenon.