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Gravity Recovery And Climate Experiment (GRACE)
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While gravity is much weaker than other basic forces in nature, such as magnetism and electricity, its effects are ubiquitous and dramatic. Gravity controls everything from the motion of the ocean tides to the expansion of the entire Universe. To learn more about the mysteries of gravity, twin satellites named GRACE, short for the Gravity Recovery and Climate Experiment, are being used to make detailed measurements of Earth’s gravity field.
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2 002