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The instrument sends and receives laser light

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The instrument sends and receives laser light
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The measuring instrument in space will search at 25,000 kilometres per hour for both natural methane sources and those caused by human activities. Fifty times per second, it will send a laser beam to the ground and receive the return signal. "With these measurements, we will obtain a world map showing atmospheric methane concentrations and also reveal regional differences," says Gerhard Ehret from the DLR Institute of Atmospheric Physics.
Credit: DLR.
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