Once we are done Moving from Earth to the Moon and then to Mars, what other places would Astronauts be happy to create other bases on?

Value Of Titan As Base For Humans In Saturn System - Surprisingly - Once There - Easier For Settlement Than Mars Or The Moon

Titan might seem an unlikely place to for humans to build settlements, and maybe eventually colonize. After all, it is so far from the sun, and extraordinarily cold, and it's a long journey to get there (at present).

From article, (Titan might seem an unlikely place to for humans to build settlements, and maybe eventually colonize. After all, it is so far from the sun, and extraordinarily cold, and it's a long journey to get there (at present). But actually, if you set aside the difficulty of getting there, which we should overcome as our technology improves - it's got more going for it than you might think. This is an idea originally developed in some detail by Charles Wohlforth and Amanda Hendrix, authors of Beyond Earth: Our Path to a New Home in the Planets

It's got many possible native sources of energy for one, including chemical, high altitude winds, some potential for hydro, and (surprisingly) a lot of potential for solar power too. It has no oxygen in its atmosphere of course, but the proposals for chemical fuels on Titan use hydrogen in place of oxygen. Those ideas come from this paper Energy Options for Future Humans on Titan which I will describe in a bit more detail later.

It has many other advantages. The thick atmosphere and the low gravity greatly simplify the process of building habitats - and eventually maybe large enclosed settlements. Habitats can be built with the same pressure inside and out (there's no problem with living in slightly higher than Earth's sea level atmospheric pressure).

It has almost no winds at ground level (you have to go up to a height of 3 km to find wind speeds of over 4 miles per hour) and little to disturb the colonists. The surface is largely ice, not that different from living in Antarctica. Any machinery can be protected from surface conditions with an airtight enclosure.

Although it is very cold, at 98 °K (−179 °C, or −290 °F), normally the main issue with a habitat is to reject heat (the ISS has ammonia circulating through giant radiators to keep it cool). Thermal insulation isn't hard to do. Heat rejection would be much easier with an atmosphere and convection. You are going to be in a thermally insulated dwelling and wear a full body suit when you go outside, enclosing your body like a wetsuit perhaps, and with an aqualung. indeed much like a diver. Probably with heating elements in the suit too to keep you warm. We know how to do thermal insulation. This outfit is far simpler, and much lower cost than a spacesuit.

 Its atmosphere gives you protection from cosmic radiation and solar storms - and from quite large meteorites too, up to meters in diameter, like Earth's atmosphere. And finally, it has abundant hydrocarbons which are great for making plastics for your settlement.

[Then there is] Callisto a far far better place to send humans if you want to visit Jupiter and beyond. It's outside the intense radiation belts, its surface is thought to be smooth close up, and it is very stable, an old surface with no changes for billions of years apart from the occasional impact crater. It's got just as much ice as Europa, indeed, more so, so is a natural source for refueling. It is not so deep in [Jupiter's] gravity well. As an old undisturbed surface, it should have received a useful 120 - 140 meters of organics and other materials from asteroids and comets. And unlike its better known cousin Europa, it has no planetary protection issues at all, and is classified as Category II, the same as the Moon. It is thought to have a deep subsurface ocean but with no communication with the surface.)

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