Ulysses Flyby of the Sun's North Pole

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A Ulysses clock plot of solar wind speed vs. latitude reveals a high-speed wind blowing from the suns poles.
A Ulysses "clock plot" of solar wind speed vs. latitude reveals a high-speed wind blowing from the sun's poles.

Consider it a case of exquisite timing. Just last week, solar physicists announced the beginning of a new solar cycle and now, Jan. 14th, the Ulysses spacecraft is flying over a key region of solar activity--the sun's North Pole.


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