COSMOS-Webb is slated to be the largest program in JWST’s first year of operation A. Sue Weisler RIT Assistant Professor Jeyhan Kartaltepe is the principal investigator of COSMOS-Webb, the largest General Observer program selected for James Webb Space Telescope’s first year. When the James Webb Space Telescope (JWST)—the long-awaited successor to the Hubble Space Telescope—becomes operational in 2022, one of its first orders of business will be mapping the earliest structures of the universe. A team of nearly 50 researchers led by scientists at Rochester Institute of Technology and University of Texas at Austin will attempt to do so through the COSMOS-Webb program, the largest General Observer program selected for JWST’s first year.