There are altitudes in Venus' atmosphere where pressure and temperature are hospitable to humans. At these locations, our atmosphere is a lifting gas. So balloon cities are a possibility.scottb50":l9r6x28f said:What good would that be? Venus surface missions would be impossible, at best!HopDavid":l9r6x28f said:There is a very nice possible Earth-Venus cycler system. But at this time we know very little about asteroids with aphelions of 1 A.U. or less. Such asteroids are hard to see for a number of reasons.
Using aerobraking and the Oberth effect it is possible to capture near Venus asteroids to Venus orbit. This would make them easier to exploit in a number of ways.
Far fetched, yes. But then so is Mars colonization.
I just invested some time and effort talking about cyclers. But I see no evidence you understood a word.scottb50":l9r6x28f said:A Mars-Earth cycler would enter a very elliptical orbit, Tugs in orbit to transfer Modules to or from, low Mars or Earth orbit.
Manned missions are more difficult than robotic. Converting asteroid resources to usable infrastructure more difficult still. Nudging said infra structure into a usable cycler orbit and maintaining the orbit? No, not a piece of cake.scottb50":l9r6x28f said:Asteroids would be a piece of cake. At least two vehicles have landed on asteroids and survived.