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venerdì 17 gennaio 2020

Sounds of the Solar Wind from NASA's Parker Solar Probe


Source video: JHU Applied Physics Laboratory

There’s a wind that emanates from the Sun. It blows not like a soft whistle but like a hurricane’s scream. Made of electrons, protons and heavier ions, the solar wind courses through the solar system at roughly 1 million mph (1.6 million kph), barreling over everything in its path. Yet through the wind’s roar, NASA’s Parker Solar Probe hears the small chirps, squeaks and rustles that hint at the origin of this mysterious and ever-present wind. The spacecraft’s FIELDS instrument can eavesdrop on the electric and magnetic fluctuations caused by plasma waves. The Parker Solar Probe it can “hear” when the waves and particles interact with one another, recording frequency and amplitude information about these plasma waves that scientists could then play as sound waves. And it results in some striking sounds. Solar wind sounds playlist: https://soundcloud.com/jhu-apl/sets/s... Learn more about the Sounds of the Solar Wind: https://www.jhuapl.edu/FeatureStory/2... More on solar wind sound from the Parker Solar Probe: http://parkersolarprobe.jhuapl.edu/Ne...

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