Hunting the Edge of Space - The Mystery of the Milky Way (2010) | Full Documentary | NOVA

A history of telescopes, from Galileo's refractor to Newton's reflector and beyond, including key discoveries. Take a closer look at recent missions, including the voyage of the Cassini spacecraft to Saturn, the Kepler telescope's search for planets beyond our solar system, and the Herschel Space Observatory's examination of the Milky Way. Welcome to PBS America, a channel curated for an international audience from America's Public Broadcasting Service, PBS. This is a factual focussed channel including award-winning American history, current affairs and science. SIGN UP to our UK broadcast channel weekly highlights at pbsamerica.co.uk FOLLOW us on X @PBSAmerica LIKE us on Facebook.com/pbsamerica