James Webb Space Telescope Prelaunch by James Webb Space Telescope A mockup of Arianespace&rsquo

James Webb Space Telescope Prelaunch by James Webb Space Telescope A mockup of Arianespace’s Ariane 5 rocket is seen at the entrance to the Guiana Space Center in Kourou, French Guiana, Tuesday, Dec. 21, 2021. The James Webb Space Telescope (sometimes called JWST or Webb) is a large infrared telescope with a 21.3 foot (6.5 meter) primary mirror. The observatory is scheduled to launch later in the week and will study every phase of cosmic history—from within our solar system to the most distant observable galaxies in the early universe. Photo Credit: (NASA/Bill Ingalls) https://flic.kr/p/2mUkB2K