Two Small NASA Satellites Will Measure Soil Moisture, Volcanic Gases

Two NASA pathfinding missions were recently deployed into low-Earth orbit, where they are demonstrating novel technologies for observing atmospheric gases, measuring freshwater, and even detecting signs of potential volcanic eruptions. The Signals of Opportunity P-Band Investigation SNoOPI, a low-noise radio receiver, tests a new technique for measuring root-zone soil moisture by harnessing radio signals produced . https://science.nasa.gov/e...
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