Barnard-Seyfert Astronomical Society

June 2015: No Surprise! Earth’s Strongest Gravity Lies Atop The Highest Mountains

A combination of instruments aboard NASA's Gravity Recovery and Climate Experiment (GRACE) satellites, including the SuperSTAR accelerometer, the K-band ranging system and the onboard GPS receiver, have enabled the construction of the most accurate map of Earth's gravitational field ever: to accelerations of nanometers per second squared.