Universe Today
In this video Saul Perlmutter, one of the three winners of the 2011 Nobel Prize in Physics, explains how dark energy, which makes up 70 percent of the universe, is causing our universe to expand.
In this video Saul Perlmutter, one of the three winners of the 2011 Nobel Prize in Physics, explains how dark energy, which makes up 70 percent of the universe, is causing our universe to expand.