Facing down a heat wave this summer? There's a new beta app for iPhones from the founder of Twitter, Jack Dorsey, that helps you track your exposure to the sun. The Sun Day app is free to testers and ...
WASHINGTON, Aug 24 (Reuters) - The solar wind is a ubiquitous feature of our solar system. This relentless high-speed flow of charged particles from the sun fills interplanetary space. On Earth, it ...
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