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The Week in Pictures: May 11–17, 2013

In the past seven days, a mechanical failure suspended observations with the Kepler space telescope, the Sun released four X-class flares in less than 48 hours, astronauts repaired an ammonia leak outside the International Space Station, and more.

NASA/SDO/GSFC

The Sun emits first X class solar flares of 2013

Within 48 hours, the Sun emitted the four most intense bursts of radiation so far this year; none is Earth-directed. Learn more »
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