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A cosmic alignment of the sun, Earth, and the center of our galaxy on the winter solstice happens every year without event, and poses no danger in 2012.
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Given the vastness of space and the long times between supernovae, astronomers can say with certainty that there is no threatening star close enough to hurt Earth.
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An animation showing the onset and movement of rainfall from Washi was created by Dr. Zhong Liu, at the Goddard Earth Sciences Data and Information Services Center at NASA Goddard Space Flight Center in Greenbelt, Md.
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