Astronomy on BBC Radio 4 Solar Winds

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    In Our Time BBC Radio 4 on Thursday 23rd January at 9.00am (a shorter version in the evening
    “Solar Wind”
    Melvyn Bragg and guests discuss the flow of particles from the outer region of the Sun which we observe in the Northern and Southern Lights, interacting with Earth's magnetosphere, and in comet tails that stream away from the Sun regardless of their own direction. One way of defining the boundary of the solar system is where the pressure from the solar wind is balanced by that from the region between the stars, the interstellar medium.

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