The Milky Way by Spitzer telescope. Image credit: NASA.

Nobel Laureate John Mather and Nat Geo Explorer-in-Residence Robert Ballard discuss how technology expands the limits of the known universe. Life in the deepest oceans and perhaps in our immense universe.


The event at National Geographic. Washington, D.C. Event date: 2011-12-14. Speakers: Robert Ballard, John Mather.

Exploring the Edge of Existence from National Geographic Live on