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Artist's concept of Gravity Recovery and Climate Experiment
Artist's concept of Gravity Recovery and Climate Experiment

GRACE, twin satellites launched in March 2002, are making detailed measurements of Earth's gravity field which will lead to discoveries about gravity and Earth's natural systems. These discoveries could have far-reaching benefits to society and the world's population.

Image credit: NASA/JPL-Caltech

Page Last Updated: July 30th, 2013
Page Editor: NASA Administrator