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A comment on The Billion-Dollar Telescope Race.

Re:The Billion-Dollar Telescope Race by millioncents on Tuesday September 02, 2014 @10:52PM (#8261304)
That's pretty impressive. Given the size and importance of the mirrors, I wondered how they actually clean them. Came across this: https://www.youtube.com/watch?v=CkV8RRRu7gE
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