Dark Energy

One of the physicists on the Cosmic Variance blog is giving a talk on Halloween about Dark Energy at SLAC. In the write-up on the blog the author states: "...intended for a general audience with no particular knowledge of the contents of the Universe." Well, count me in. How much do we know about the Universe anyway? Our knowledge is constantly shifting and changing. The minute we think we know it all, that's when we discover something else, and we begin to realize that the more we know, the more we realize how much more there is to know!