A satellite that will survey Earth's oceans and freshwater lakes has launched
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The first mission to survey nearly all of the water on Earth’s surface has launched. The international Surface Water and Ocean Topography mission, known as SWOT, lifted off aboard a SpaceX Falcon 9 rocket from Vandenberg Space Force Base in California at 6:46 a.m. ET on Friday. The first stage of the rocket successfully landed back on Earth at 6:54 a.m.
Researchers who study bodies of water have had to rely on instruments that take measurements at specific spots, like river or ocean gauges. Similarly, previous space-based satellites have gathered more limited data that can’t plumb the true depths of Earth’s water bodies. One example of an obstacle to collecting precise readings is that steep-banked rivers don’t appear wider or narrower even if more water is flowing through them.
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