Pinning Down the Universe’s Rate of Expansion

Captured From: Paul Hooper at Spirit Design, with Mat Pieri and Gongbo Zhao, ICG Visualization of the experiment carried out by the Baryon Oscillation Spectroscopic Survey (BOSS). Redshift data from 140,000 quasars collected by a 2.5-meter telescope at Apache Point, New Mexico, provide the most accurate measurement to date of the expansion rate of the Universe.