Weather sensors could float forever in the stratosphere using sunlight

A device that uses differences in temperature to levitate could keep small sensors floating indefinitely in the stratosphere, such as for monitoring the weather Technology 20 October 2022 By Karmela Padavic-Callaghan Sunlight could keep sensors floating in the sky NASA Photo/Alamy Small sensors powered only by sunlight could float in the stratosphere indefinitely and make …

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