Saturday, April 04, 2009
None Spots
Sunspots have yet to return:
In a way, the calm is exciting, says Pesnell. “For the first time in history, we’re getting to observe a deep solar minimum.” A fleet of spacecraft — including the Solar and Heliospheric Observatory (SOHO), the twin probes of the Solar Terrestrial Relations Observatory (STEREO), and several other satellites — are all studying the sun and its effects on Earth. Using technology that didn’t exist 100 years ago, scientists are measuring solar winds, cosmic rays, irradiance and magnetic fields and finding that solar minimum is much more interesting than anyone expected.
6:49 PM
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