Weekend Edition Sunday
<iframe src="http://www.npr.org/player/embed/962272/962273" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
Long before a spirit of cooperation fueled mutual ambitions in space exploration, competition and fear spurred man's desire to rocket into space. NPR's Liane Hansen offers a timeline of manned space travel.
NPR thanks our sponsors
Become an NPR sponsor