A manned Mars cycler space station approaches the planet Mars. 插畫檔

A manned Mars cycler space station approaches the planet Mars. A Mars cycler is a permanently orbiting vehicle with a path that alternately brings it near Earth and Mars. Once a cycler has been accelerated into orbit it continues on its own momentum, going back and forth between the two planets, only requiring propellant for occasional course adjustments. A one09/14/2009way trip between Earth and Mars involves six to eight months of space travel, therefore a large and well09/14/2009equipped Mars cycler would offer space explorers, and possibly even space tourists, better accommodations for these long journeys. Smaller spacecraft would ferry travelers between the planets and the cycler.