Gravity Recovery and Climate Experiment (GRACE)

An award-winning mission that’s changed the way we study Earth’s gravitational forces and the Earth system, the Gravity Recovery and Climate Experiment, or GRACE, mission flew twin spacecraft in tandem around Earth to study key changes in the planet’s waters, ice sheets and the solid Earth.

In 2011, the gravity measurement technique pioneered by GRACE, which works by measuring changes in the push and pull between the twin spacecraft as they orbit Earth, was put to use on NASA’s twin GRAIL spacecraft embarking on an ambitious mission to study the gravitational forces of Earth’s moon.

In more than 15 years of operations, the GRACE satellite mission revolutionized our view of how water moves and is stored on Earth.