NASA's Solar Fleet Sees Massive Filament Erupt on Sun A long filament
erupted on the sun on August 31, 2012, shown here in a movie captured
by NASA's Solar Dynamics Observatory (SDO) from noon EDT to 1:45
a.m. the next morning. The filament lies in the lower left corner of
the sun. The movie shows light at 304 Angstroms and 171 Angstroms, both
of which help scientists observe the sun's atmosphere, or corona. STEREO
and SOHO were witness to the associate
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