This week, an international team of more than 160 astronomers working with the Atacama Cosmology Telescope released three preprint papers submitted to The Astrophysical Journal unveiling the most comprehensive and precise map of mass in the Universe — and, to their surprise, it looked exactly as they expected. The three papers describe the map’s parameters, the pipeline used to build the map, and how they dealt with sources of interference more recent than the earliest days of the universe.
