Lecture 23: The Milky Way

What is the Milky Way, and what is our place within it? This lecture
introduces the Milky Way, the bright band of light that crosses the
sky, and describes how we came to our present understanding of the size
and shape of the Milky Way Galaxy, and our location in it.
Recorded 2006 February 7 in 1008 Evans Laboratory on the Columbus campus
of The Ohio State University.