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Science 17 October 1997:
Vol. 278. no. 5337, pp. 387 - 388
DOI: 10.1126/science.278.5337.387a
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Research News

SOLAR PHYSICS:
Two Spacecraft Track the Solar Wind to Its Source

James Glanz

The precise source of the wind of particles that originates near the sun's surface and blows throughout the solar system has been a mystery. Solar physicists' best guess has been that one component, a steady, fast wind that blows at up to 800 kilometers a second, originates near the sun's poles; the wind's other component, more capricious and slow, seems to come from somewhere within a broad region around the solar equator. Now, by coordinating observations of the sun's atmosphere from two different spacecraft, a new study may have finally pinpointed the source of the slow wind--while calling into doubt the standard wisdom on the fast wind.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)