Human Spaceflight: Coming Back to America

Astronauts may soon ride on US rockets and in US spaceships for the first time since the last Space Shuttle flight. Jon Cowart of NASA is working with SpaceX toward the first launch of a Dragon spacecraft with humans on board. See the moons of Saturn as you’ve never seen them before in Emily Lakdawalla’s new composite image. Bruce Betts has just returned from Japan with a What’s Up update on the Planetary Defense Conference. Bill Nye has the week off. Related links are here: http://www.planetary.org/multimedia/planetary-radio/show/2017/0524-jon-cowart-commercial-crew-spacex.html