A surface gravity traverse on Mars indicates low bedrock density at Gale crater

@article{Lewis2019ASG,
  title={A surface gravity traverse on Mars indicates low bedrock density at Gale crater},
  author={K. Lewis and S. Peters and Kurt Gonter and S. Morrison and N. Schmerr and A. Vasavada and T. Gabriel},
  journal={Science},
  year={2019},
  volume={363},
  pages={535 - 537}
}
Teaching Curiosity to do gravimetry Gravimetry—the measurement of tiny changes in gravitational fields—can be used to weigh mountains. Large-scale gravimetric mapping can be done from orbit, but examining small details requires a vehicle on the ground. The Curiosity rover on Mars carries several accelerometers used for routine navigation. Lewis et al. recalibrated these accelerometers to allow them to be used for gravimetry. They measured how the local gravitational field changed as the rover… Expand
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