April 10 – Public Monthly Meeting – How to Measure Velocities of Distant Galaxy Clusters, and Why
How to Measure Velocities of Distant Galaxy Clusters, and Why  Arthur Kosowsky, Ph.D. Sunday, April 12, 2022 7:30 PM to 9:00 PM EST Online event meet.google.com/osh-bcyd-gti Monthly Meeting - Public Invited  Abstract: Galaxy clusters are the most massive gravitationally bound objects in the universe. Their hot ionized gas scatters photons of the cosmic microwave background, creating a microwave spectrum distortion (called the Thermal [...]