The “distance ladder” is a series of techniques to measure larger distances to map out the known universe. The Cepheid Variable distance method discovered a century ago was used to get the size of our Milky Way galaxy and show that the Andromeda spiral was far outside it. In recent decades, Dr. Shashi Kanbur of Oswego's physics faculty and collaborators have fine-tuned this distance method by noting and modeling a subtle non-linearity in the data, providing a more accurate measure of the size and age of the universe.
Sunday, January 26 at 7:00pm to 8:00pm
Richard S. Shineman Center, Planetarium, Room 223