ESO’s Extremely Large Telescope is now half completed

ESO’s Extremely Large Telescope is now half completed
The European Southern Observatory’s Extremely Large Telescope (ESO’s ELT) is a revolutionary ground-based telescope that will have a 39-metre main mirror and will be the largest telescope in the world for visible and infrared light: the world’s biggest eye on the sky. Construction of this technically complex project is advancing at a good pace, with the ELT now surpassing the 50% complete milestone.
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