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To learn more about the milestones, from the ELT's dome and main structure to off-site development of mirrors and instruments, go here: https://www.eso.org/public/videos/potw2629a/ 🔭 🧪 2/2

Beautiful. 🤩 Let’s hope our sky is still dark when the ELT is commissioned. Projects like Reflect Orbital are adding new light pollution to an already bad situation with satellite constellations and urban LEDs worldwide. 😬🤞🏻