June 24, 2007: Dark Matter and Hubble - Richard Massey

Art Bell welcomes astronomer Richard Massey, a postdoctoral scholar at the California Institute of Technology, to discuss his groundbreaking work mapping dark matter using the Hubble Space Telescope. Massey explains that dark matter constitutes roughly 86 percent of the total mass in the universe yet remains completely invisible, detectable only through its gravitational influence on light from distant galaxies through a process called weak gravitational lensing. Massey describes how dark… Full show notes & guests: https://artbellarchive.org/episode/june-24-2007-dark-matter-and-hubble-richard-massey/