Solar system expansion and strong equivalence principle as seen by the NASA MESSENGER mission

@inproceedings{Genova2017SolarSE,
  title={Solar system expansion and strong equivalence principle as seen by the NASA MESSENGER mission},
  author={Antonio Genova and Erwan Mazarico and Sander J. Goossens and Frank G. R. Lemoine and Gregory A. Neumann and David E. Smith and Maria T. Zuber},
  booktitle={Nature Communications},
  year={2017}
}
The NASA MESSENGER mission explored the innermost planet of the solar system and obtained a rich data set of range measurements for the determination of Mercury’s ephemeris. Here we use these precise data collected over 7 years to estimate parameters related to general relativity and the evolution of the Sun. These results confirm the validity of the strong equivalence principle with a significantly refined uncertainty of the Nordtvedt parameter η = (−6.6 ± 7.2) × 10−5. By assuming a metric… CONTINUE READING
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