Researchers had previously linked sunquakes to solar flares. On February 15, 2011, researchers spied two sunquakes and a solar flare that occurred around the same time—but the flare wasn't hot enough to have spawned the seismic waves.
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Video: A huge flare began erupting on the sun at 8:42 AM ET on Thursday, January 19, 2012. It is expected to reach Earth on Saturday, January 21, 2012.
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