Editing Interplanetary spaceflight (section)

===Cyclers===
It is possible to put stations or spacecraft on orbits that cycle between different planets, for example a [[Mars cycler]] would synchronously cycle between Mars and Earth, with very little propellant usage to maintain the trajectory. Cyclers are conceptually a good idea, because massive radiation shields, life support and other equipment only need to be put onto the cycler trajectory once. A cycler could combine several roles: habitat (for example it could spin to produce an "artificial gravity" effect), or a mothership (providing life support for the crews of smaller spacecraft which hitch a ride on it).<ref>{{cite magazine | url=http://www.popularmechanics.com/science/air_space/2076326.html?page=1 | title=Buzz Aldrin's Roadmap To Mars | date=2005 | last1=Aldrin | first1=B | last2=Noland | first2=D | magazine=Popular Mechanics | url-status=dead | archive-url=https://web.archive.org/web/20061211195430/http://www.popularmechanics.com/science/air_space/2076326.html?page=1 | archive-date=2006-12-11 }}</ref> Cyclers could also possibly make excellent cargo ships for resupply of a colony.