James Webb Space Telescope Prelaunch

NASA Program Director for the James Webb Space Telescope Program Greg Robinson gives a brief interview on NASA television as he and the launch team monitor the countdown of the launch of Arianespace's Ariane 5 rocket carrying NASA’s James Webb Space Telescope, Saturday, Dec. 25, 2021, in the Jupiter Center at the Guiana Space Center in Kourou, French Guiana. 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 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)