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The Moon Bites a Chunk out of the Sun

On July 26, NASA's Solar Dynamics Observatory (SDO) noticed something peculiar about its normally uninterrupted view of the sun -- a chunk was missing. Continue reading →

July 29, 2014
11:28 AM EDT
The sun seen through 2 filters (304A and 171) and a blended view of both (right). | NASA/SDO