Early today, the Solar Dynamics Observatory was able to observe the Moon coming in between the spacecraft and the Sun. If you look closely, you can actually see mountains on the Moon subtly backlit by the Sun’s atmosphere.
The SDO science team says that not only is this amazing to see, but it actually allows them to “sharpen-up” the SDO images. The sharp edge of the lunar limb allows our team to measure the in-orbit characteristics of the telescopes on board the spacecraft.
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See a close-up image (processed by our own Jason Major) below.