Alfvén waves accelerate solar wind

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Alfvén waves

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solar wind

Space

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Lucky alignment of 2 spacecraft reveals how solar wind gets a magnetic push

Summary

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79% Informative

Astronomers have long wondered how solar wind heats up and accelerates to speeds of more than 310 miles per second .

A team of heliophysicists have now found compelling evidence that Alfvén waves are capable of pumping enough energy into streams of solar wind to propel them to unexpectedly high speeds.

The discovery is one of the key puzzle pieces to answer the 50-year-old question of how the solar wind is accelerated and heated in the heliosphere.

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semi-formal

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English

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