Research NewsSolar Physics

Turning Up the Heat in the Corona

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Science  17 Oct 1997:
Vol. 278, Issue 5337, pp. 387
DOI: 10.1126/science.278.5337.387b

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Last year, an instrument aboard the Solar and Heliospheric Observatory (SOHO) spacecraft dazzled solar physicists by finding oxygen ions in the sun's corona at temperatures of 100 million degrees Celsius--many times hotter than expected. In an upcoming issue of Solar Physics, the team that operates SOHO's Ultraviolet Coronagraph Spectrometer drops another bombshell: a strong hint of the mysterious mechanism that generates these sizzling temperatures and, in so doing, drives the solar wind (see main text).

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