NASA's Earth-observing fleet of spacecraft constitutes a major milestone in the history of Earth science, facilitating pioneering research endeavors that until the last decade have been impossible to even consider. See the orbits of this fleet as they circle the globe.
Global satellite observations are central to the recent and future advances in polar research, revealing retreating glaciers, shrinking sea ice and melting permafrost. This visualization shows many of the spacecraft in NASA's Earth-observing fleet, a complex sensor web keeping tabs of Earth's vital signs.
Credit: NASA/GSFC Scientific Visualization Studio
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