James Webb Space Telescope Second Primary Mirror Deployment

Engineering teams at NASA’s James Webb Space Telescope Mission Operations Center at the Space Telescope Science Institute in Baltimore monitor progress as the observatory’s second primary mirror wing rotates into position, Saturday, Jan. 8, 2022. Webb, an infrared telescope with a 21.3-foot (6.5-meter) primary mirror, was folded up for launch and underwent an unprecedented deployment process to unfold in space. As NASA's next flagship observatory, Webb 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)