Chaboyer study: dark energy drives universe
Just when it looked like cosmologists had a firm grasp on the fundamental laws of the universe, it turns out that they know far less about its workings than previously thought. Confirming earlier findings that the universe has the ability to expand indefinitely, Physics and Astronomy Professor Brian Chaboyer recently found that the universe is composed of a mysterious form of negative pressure energy -- dubbed "dark energy" -- that scientists have never been able to directly observe. Because dark energy is too dificult to view in a laboratory, scientists can only infer its presence based on how it has influenced the expansion of the universe. Chaboyer and his collaborator Lawrence Krauss, a physics and astronomy professor at Case Western Reserve University, published their findings in the Jan.