The first edition of the CMB-S4 (Cosmic Microwave Background “Stage-4”) science book has appeared on the arXiv this year, detailing how the next generation CMB experiment will be designed to use the oldest detectable light in our universe to investigate some of the biggest open questions in physics today. The ground-based, multiple telescope CMB-S4 experiment … Continue reading Neutrino physics with CMB-S4

This week, filmmaker Debra Kellner brought us the first in a series of short films about the construction of the Simons Observatory. It includes some beautiful drone footage of ACT, POLARBEAR, and the site at which SO will soon be built. There was some debate about whether or not a drone could fly above 17,000 … Continue reading The Eternal Sky: A short film about the Simons Observatory