How do we know the universe is expanding? And, if it is, just what is it expanding into? Rob Knop, assistant professor of Physics and Astronomy at Vanderbilt, delves into these mysteries (as well as the mystery of his expanding waistline) in this interview.
"Stellar Conversations" is produced by Vanderbilt Dyer Observatory.
Contact: Nancy Dwyer, (615) 373-4897
nancy.dwyer@vanderbilt.edu