Casting a $20 Million Mirror for the World’s Largest Telescope

IEEE Spectrum · 7M views · 2018 · 2:26

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Details the engineering and precision required to cast a massive mirror for a next-generation telescope.

Linked by 4 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including ig.com.br, wimp.com, flashjohnson.com, jessriedel.com.