Click on this arresting photograph of Hawaii’s Mauna Kea volcano, shot from orbit, and then see if you can make out a series of white structures on the summit.

See them? They form a ‘C’ right at the top. (For an original, high resolution version of the image, go here.)

These are some of the 13 working telescopes near the volcano’s summit, as seen from the International Space Station on Nov. 1, 2015 and posted today by NASA’s Earth Observatory.

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