[14-Sep-2015] Every day water moves around the planet - falling as rain, running through rivers, evaporating from the ocean, melting from ice. While we can see some of these processes in our everyday lives, NASA satellites provide an opportunity to see them happen across the globe.This interactive allows you to explore and compare data from three current NASA satellite missions: Aquarius (measuring ocean salinity), GRACE (using gravity to understand water storage), and TRMM (measuring precipitation).While it's not possible to "see" every part of the water cycle, satellite data can help us to observe how water flows through the atmosphere, the oceans, and on land.By considering questions and observing data side-by-side, you can learn how NASA data sets, when used together, can provide a more complete understanding of water in our Earth system. Assemble your own Earth Wheel

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