A 20-Year Cosmic Quest Ends, but the Universe Just Got More Mysterious

Three papers in JCAP report the final data release from the Atacama Cosmology Telescope, unveiling a new map of the early “infant” Universe, confirming the “Hubble tension,” and ruling out several extended cosmological models. There is often a sense of mixed emotions when a long scientific project concludes. For the Atacama Cosmology Telescope (ACT), that [...]