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Solar Storm Sends Charged Particles Toward Earth
from the Los Angeles Times (Registration Required)
A massive explosion on the sun's surface has triggered the largest solar radiation storm since 2005 and has unleashed a torrent of charged plasma particles toward Earth, though the threat to satellites, power grids and other high-tech hardware is believed to be manageable, scientists said.
The National Oceanic and Atmospheric Administration detected a solar flare Sunday night that peaked at 7:59 p.m. Pacific time. NOAA satellites traced the bright flash of X-ray light to an area on the sun's surface known as region 1402--the same area that had produced a weaker flare Thursday. A coronal mass ejection--which can hurl billions of tons of plasma up to 5 million mph--quickly followed.
Radiation from the explosion arrived at Earth within hours of the flash, said Doug Biesecker, a physicist with NOAA's Space Weather Prediction Center in Boulder, Colo. A burst of charged plasma particles is expected to reach Earth by 6 a.m. Tuesday. That charged plasma is traveling uncommonly fast, making the 93-million-mile trip to Earth in about 34 hours, rather than taking two or more days, as is usually the case, Biesecker said.
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