GRACE

Overview

A twin-satellite mission that mapped tiny variations in Earth's gravity field to track the movement of water, ice, and mass around the planet.

Knowledge connections

• OrbitLow Earth Orbit (LEO)
• Operated byNASA

Sources

Facts on this topic will be cited from these primary and reference sources.

• NASANational Aeronautics and Space Administration

  Mission data, planetary science, space telescopes, and public-domain imagery.

  Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.