America\'s Space program is at a turning point.
With his signature wit and thought-provoking insights, Neil Degrasse Tyson--one of our foremost thinkers on all things space--illuminates the past, present, and future of.
No astronauts will be launched in an American craft, from American soil, until the 2020s, and NASA may soon find itself eclipsed by other countries\' Space programs.
After decades of global primacy, NASA has ended the space-shuttle program, cutting off its access to space.
America\'s Space program is at a turning point