Lecture presented at Augustana College, Department of Physics and Astronomy
on the occasion of inducting new members into the local chapter of Sigma Pi Sigma.


Dark Energy in the Universe
Dr. Scott Dodelson, Theoretical Astrophysics, Fermilab
Physics Department, University of Chicago
Monday, April 18, 2005 at 6:30 pm in Science 102

Seventy percent of the universe is a form of energy never detected on Earth: dark energy. What is dark energy? How do we know it exists?  Answers to these questions lead to a third question, one of the most fascinating in physics today: How is dark energy connected to and explained by fundamental physics?  Answering this question may lead to a radical revision of our notions of space and time.