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Tracking Earth's water in motion

GRACE Follow-on (GRACE-FO) is continuing GRACE's legacy of tracking Earth's water movement to monitor changes in underground water storage, the amount of water stored in large lakes and rivers, soil moisture, ice sheets and glaciers, and sea level caused by the addition of water to the ocean. These discoveries provide a unique view of Earth's climate and have far-reaching benefits to society and the world's population.

people spotlight
Sammy Kayali
Deputy Project Manager

"I remember my first science report in elementary school -- I did it on Jupiter. And so when I actually got a chance to get a spacecraft to Jupiter as an adult, that was like a life dream come true."

"As I started looking for work, JPL came to interview. I didn't think that I had much of a chance of working at JPL because it's all these brainy people, right? And so I went in there as a


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