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The international Surface Water and Ocean Topography (SWOT) satellite is shown in orbit over Earth in this illustration, with sunlight glinting off one of its solar arrays and both antennas of its Ka-band Radar Interferometer (KaRIn) instrument extended. The mission is a collaborative effort between NASA and the French space agency Centre National d'Études Spatiales (CNES) – with contributions from the Canadian Space Agency (CSA) and the UK Space Agency. KaRIn is the scientific heart of the SWOT satellite, which will survey the water on more than 90% of Earth's surface, measuring the heig…
