All 18 of the primary mirrors have been fully installed onto the flight structure of what will become the biggest and most powerful space telescope ever built by humankind – NASA’s James Webb Space Telescope (JWST).

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Completion of the huge and complex primary mirror marks a historic milestone and a banner start to 2016 for JWST, commencing the final assembly phase of the colossal observatory that will revolutionize our understanding of the cosmos and our place it in.

After JWST launches in slightly less than three years time, the gargantuan observatory will significantly exceed the light gathering power of the currently most powerful space telescope ever sent to space – NASA’s Hubble!

Read more at Universe Today.