Left: The Earth eclipses the sun.

Left: The view of the sun is partially obscured by Earth as seen by NASA’s Solar Dynamics Observatory on Mar. 11, 2013, at 2:20 a.m. EDT. Credit: NASA/SDO
Right: This image from NASA’s Solar Dynamics Observatory on Mar. 11, 2013, at 8:00 a.m. EDT, shows the moon crossing in front of the sun. Credit: NASA/SDO
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On March 2, 2013, NASA’s Solar Dynamics Observatory (SDO) entered its semiannual eclipse season, a period of three weeks when Earth blocks its view of the sun for a period of time each day. On March 11, however, SDO was treated to two transits. Earth blocked SDO’s view of the sun from about 2:15 to 3:45 a.m. EDT. Later in the same day, from around 7:30 to 8:45 a.m. EDT, the moon moved in front of the sun for a partial eclipse.

 

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