NPR Story
11:00 am
Fri March 16, 2012

Adam Riess: One Cosmic Puzzle Solved, Many To Go

Astrophysicist Adam Riess shared the Nobel Prize in Physics in 2011 for his work on distant supernovae, which demonstrated that the universe was not only expanding--but that its expansion was accelerating. Now he's hunting for clues that might explain why, and one of the prime suspects is a mysterious force known as dark energy.