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A Large Excess in Apparent Solar Oblateness Due to Surface Magnetism

Scientists using the RHESSI spacecraft have measured the roundness of the sun with unprecedented precision, and they find that it is not a perfect sphere. During years of high solar activity the sun develops a thin "cantaloupe skin" that significantly increases its apparent oblateness.

See the Press Release or read the full article.

 

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Responsible NASA Official:  Gordon D. Holman

Web Design:  Merrick Berg, Brian Dennis, Gordon Holman, & Gilbert Prevost

Heliophysics Science Division
NASA/Goddard Space Flight Center
Laboratory for Solar Physics/ Code 671
Greenbelt, MD, 20771, USA
Gordon.D.Holman@nasa.gov

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This site last updated November 10, 2008.