https://finnoexpert.com/2023/04/18/from-bullets-to-bird-residue-the-many-trials-of-telescopes/
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4/18/23 at 7:00am
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Finnoexpert.com
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Few things in science appear to be as delicate or precarious as the giant mirrors at the hearts of modern telescopes. These mirrors — doughnuts of glass
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