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<<< This image, captured
by the Solar Dynamics Observatory, shows the M5.3 class solar flare that peaked on July 4, 2012, at 5:55 AM EDT and released on July 5, 2012.
CREDIT: REUTERS/NASA/SDO/AIA/HELIOVIEWER/HANDOUT
(Reuters) - Fierce solar blasts that could have badly
damaged electrical grids and disabled satellites in space narrowly missed Earth
in 2012, U.S. researchers said on Wednesday.
The bursts would have wreaked havoc on the Earth's magnetic
field, matching the severity of the 1859 Carrington event, the largest solar
magnetic storm ever reported on the planet. That blast knocked out the
telegraph system across the United States, according to University of
California, Berkeley research physicist Janet Luhmann.
"Had it hit Earth, it probably would have been like the
big one in 1859, but the effect today, with our modern technologies, would have
been tremendous," Luhmann said in a statement.
A 2013 study estimated that a solar storm like the
Carrington Event could take a $2.6 trillion bite out of the current global
economy. Massive bursts of solar wind and magnetic fields, shot into
space on July 23, 2012, would have been aimed directly at Earth if they had
happened nine days earlier, Luhmann said.
The bursts from the sun, called coronal mass ejections,
carried southward magnetic fields and would have clashed with Earth's northward
field, causing a shift in electrical currents that could have caused electrical
transformers to burst into flames, Luhmann said. The fields also would have
interfered with global positioning system satellites.
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