Simons Observatory's large telescope slated for October 2026 sky survey

In an Oct. 14 report, Science said the Simons Observatory’s large telescope was due to begin a sky survey in October 2026. Three smaller telescopes had already begun observing, searching for polarization patterns that could point to inflation. The large telescope’s microwave-background maps could also help locate galaxy clusters, but the projected total of up to 40,000 is not a detection count.