In the Mission to Mars & Space Exploration thread, strollingbones raised the questions: I would like to draw attention to [url="http://www.islandone.org/Propulsion/ProjectOrion.html']Orion[/url]. No matter how it gets into orbit, Orion is one space ship that will fly on atomic wings! A round trip of 125 days means only 62 days in transit to the job. With at least 10,000 tons of cargo, plenty of exercise equipment could be installed for the astronauts; possibly even a rotating/counter rotating habitat system to provide weight! Atomic Power, the future's greatest hope!