The close distance between Venus and the Earth reminds me of a proposal to use a Saturn V to do a 1 year manned flyby of Venus: <a href="http://en.wikipedia.org/wiki/Manned_Venus_Flyby#Apollo_Applications_Program" rel="nofollow">http://en.wikipedia.org/wiki/Manned_Venus_Flyby#Apollo_Appli...</a><p>Basically it would use a repurposed S-IVB like Skylab. Skylab has a (relatively deserved) poor reputation, but it was spacious as hell: <a href="https://www.youtube.com/watch?v=Awe6vOXURpY" rel="nofollow">https://www.youtube.com/watch?v=Awe6vOXURpY</a> (I wonder if Pete Conrad, seen running around the station in that video, had seen <i>2001: A Space Odyssey</i>)