Dark Energy

Six renowned physicists reflect on the mystery of so-called “dark energy” - the surprising acceleration in the expansion of the universe that was discovered by two groups in 1998 and later awarded with a Nobel Prize. Featured are: Nobel Laureate Roger Penrose (University of Oxford), Tony Leggett (University of Illinois), Justin Khoury (University of Pennsylvania), Freeman Dyson (Institute for Advanced Study), Claudia de Rham (Imperial College), Rocky Kolb (University of Chicago).