On July 26, 2014, from 10:57 a.m. to 11:42 a.m. EDT, the moon crossed between NASA's Solar Dynamics Observatory and the sun, a phenomenon called a lunar transit.
This happens approximately twice a year, causing a partial solar eclipse that can only be seen from SDO's point of view. Images of the eclipse show a crisp lunar horizon, because the moon has no atmosphere that would distort light.
Image: NASA's SDO observes a lunar transit (2014, July 29)
retrieved 13 May 2021
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Image: NASA's SDO observes a lunar transit