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

Astronomer Richard Massey explains his groundbreaking dark matter mapping using the Hubble Space Telescope, revealing an invisible web that constitutes 86 percent of all mass. Full show notes, transcript, guests, and related listening: https://artbellarchive.org/episode/june-24-2007-dark-matter-and-hubble-richard-massey