Twin Spacecraft Launch to Track Earth’s Water Movement

Twin Spacecraft Launch to Track Earth’s Water Movement

A joint U.S./German space mission to track the continuous movement of water and other changes in Earth’s mass on and beneath the planet’s surface successfully launched at 12:47 p.m. PDT Tuesday from the California coast. The twin spacecraft of the Gravity Recovery and...
Twin Spacecraft to Weigh in on Earth’s Changing Water

Twin Spacecraft to Weigh in on Earth’s Changing Water

A pair of new spacecraft that will observe our planet’s ever-changing water cycle, ice sheets, and crust is in final preparations for a California launch no earlier than Saturday, May 19. The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, a...