December 3, 2006: Cosmology and Time - Sean Carroll

Art Bell welcomes Sean Carroll, senior research associate in physics at the California Institute of Technology, for a wide-ranging discussion on the nature of time, space-time, and the possibility of time travel. Carroll explains that time has multiple definitions in physics, from the universal clock that labels events to the personal time measured by individual observers, a distinction Einstein revealed through relativity. Carroll walks through the science of black holes, describing evidence… Full show notes & guests: https://artbellarchive.org/episode/december-3-2006-cosmology-and-time-sean-carroll