Dudley Observatory Skywatch Lecture
October 19, 2010 @ 12:00 am EDT
Alex Filippenko - October 19, 2010"Dark Energy and the Runaway Universe"
Observations of very distant exploding stars (supernovae) show that the expansion of the Universe is now speeding up, rather than slowing down due to gravity as expected. Over the largest distances, our Universe seems to be dominated by a mysterious, repulsive "dark energy" that stretches the very fabric of space faster and faster with time.
Alex Filippenko, a member of the National Academy of Sciences, is one of the world's most highly cited research astronomers. Winner of the top teaching awards at UC Berkeley, he was named the National Professor of the Year in 2006. He has produced several astronomy video courses for The Teaching Company and appears in numerous television documentaries.