Team discovers 'throttle' for solar wind

Helium may act as a "throttle" for the solar wind, setting its minimum speed, according to new results from an MIT-led team using NASA's Wind spacecraft.

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<p><a href="http://www.physorg.com/news98642106.html">Team discovers 'throttle' for solar wind</a></p> <p>Helium may act as a "throttle" for the solar wind, setting its minimum speed, according to new results from an MIT-led team using NASA's Wind spacecraft.</p>