Re: Location, Location, Location!

jacob navia wrote:

Hop David a écrit :


Geoffrey Landis has proposed floating colonies, noting Venus' atmosphere at a certain altitude has a nice temperature and pressure.


Ahhh very nice floating around in sulfuric acid clouds

Mmmmm. NICE!!!

:-)

There is that. Landis waves away that problem with "While the atmosphere contains droplets of sulfuric acid, technology to avoid acid corrosion are well known, and have been used by chemists for centuries."

One of his papers is at: "http://powerweb.grc.nasa.gov/pvsee/publications/venus/VenusColony_STAIF03.pdf";

He notes "atmosphere contains the primary volatile elements required for life (Carbon, Hydrogen, Oxygen, Nitrogen, and Sulfur)". I'd expect these volatiles to be even more scarce on asteroids orbiting closer to the sun. So Venus might be a source of valuable resources for near-sun settlements.

I'd be willing to bet there are many asteroids with less than 1 AU apohelions. But they'd be difficult to see since they'd spend most of their time in the day sky. Also they'd be at a bad phase angle when they're near the earth.

I sometimes mention 1.25 and 1.5 year asteroids as possible low delta vee asteroids that could frequently and regularly pass near the earth.

If there are many asteroids with less than 1 A.U. apohelions, there are other possibilities as well. A .8 year asteroid might fly by every 5 years. A .5 year asteroid could visit our neighborhood each year.

The synodic period of Venus wrt to Earth is very close to 1.6. A Earth-Venus cycler with an .8 year period could work quite nicely.

Hop
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