World's largest space telescope now under construction in Utah

Technicians complete the primary mirror backplane support structure wing assemblies for NASA's James Webb Space Telescope at ATK's Space Components facility in Magna, Utah. ATK recently completed the fabrication of the primary mirror backplane support structure wing assemblies for prime contractor Northrop Grumman on the Webb telescope. Photo: Northrop Grumman/ATK, via NASA.

Aerospace contractor Alliant Techsystems is building what will be the world's largest space telescope in Magna, Utah. When completed, the James Webb Space Telescope is designed to be at least 100 times more powerful than the Hubble Space Telescope, and will open our eyes to never-before-seen planets and galaxies. There's a Webb cam (hurr hurr, get it?) on NASA's James Webb Space Telescope website, where you can observe the construction process. They reached one big milestone on Friday, with the completion of a support structure wing, shown in the photograph above. (Thanks, @bwjones!)