US Plans Lunar Motel

OffTheLip writes "The US is planning to build a permanent lunar base which will support future visits to Mars. The living conditions on the moon presents a variety of challenges from medical to construction. Contingency planning would be critical but some feel the challenges presented on the moon will be less than Mars. The moon is closer to Earth, the atmosphere is less harsh and, unlike Mars, water does not exist. Is this the start of the next space race?"

Comments

Less challenges on the moon?

[metaomni]

The article makes a very good case for just the opposite -- the moon seems like it will be a much harsher locale for future astronauts, despite its closer location.

Re:Less challenges on the moon?

[cmowire]

Well, it depends on your point of view.

If you suffer from a power/oxygen/water/etc. system failure, all you need is a few weeks supplies in the shelter on the moon. Wheras, you need to ensure that at all points in time, you've got 2 years worth of shelter supplies on Mars.

Also, the lowered gravity and nearly-nonexistent atmosphere means that a moonsuit from the 60s still works out well enough.

Also, given that you have only 3 days outside of the earth's magnetosphere to get there, you'll accumulate a lot less radiation on the way there than you would going to Mars.

Of course, that also would require piling lunar soil and rocks on top of whatever the lunar base ends up being made out of to provide sufficent mass.

But, still... Because of all of these things, it's easier to get a toehold sooner on the Moon.

The problem is that NASA has yet to grasp the idea of a fully independent spacecraft. It works out reasonably well to have astronauts swap out complete assemblies in LEO, where you can send up and down the stuff, if you are talking about going to Mars or Io or Titan or even near-earth-asteroids, you are going to be too far to pull stunts like that. We barely know how to weld and solder in space and nobody's ever tried to make a set of machine shop tools for space like lathes and mills. The moon would be a great place to research such things, but that also depends on NASA breaking with tradition and not blowing a good chance yet again.

Re:Less challenges on the moon?

[blincoln]

Backhoes work on Earth largely because Earth's gravity is stronger than the force of the earth-moving arm exerted against the ground. Bulldozers work because Earth's gravity overcomes the forward force of the dozer, giving traction sufficient to move soil.

I am imagining something like porcupine quills, only much bigger. The moon-based construction equipment shoots a couple into the ground when it needs purchase. If the construction were planned well, the equipment could be detached and the quills used again when something else needs to work in that same spot.

For a bulldozer, you could use the quills as mount points for a modified railroad track that was added on to as the bulldozer needed to move further. Unlike a railroad track on Earth, this one would also be anchoring the vehicles that ran on it.

The dust and problems with hydraulics are big concerns, though. I think it will be interesting to see how those are overcome.

Less harsh ?

[aepervius]

Mars ~ 1/100 of earth atmosphere at sea level and mainly CO2
Moon pressure (none or nearly none)

Less harsh is a kind of misnomer. You would probably have the same kind of problem between a wall separating 1 atm air and 1/100 atm CO2, as with a wall separating 1 atm air and 0, nada...

Re:Atmosphere?

[MythoBeast]

If you think about it, it's common sense. What's worse, living alone, or living with someone who steals all your stuff?

An atmosphere on Earth provides us with many benefits. First, it gives us oxygen to breathe (duh). Second it provides us with ambient pressure so our liquids don't boil. Third, it holds water in solution so we don't dry out. Fourth, it protects us from radiation from space. Fifth, it maintains a livable temperature so we don't boil or freeze. This doesn't include a host of useful and non-immediate applications, like carrying voice communication or supporting airplanes, or providing an environment for us to grow food.

The atmosphere of Mars does none of these things (except mild but inadequate radiation protection) so it's little better than a true vaccum. What it does do is leech heat out of anything it touches. It also carries microfine dust which will make it hell to keep anything mechanical working. So, yes, the "atmosphere" of the Moon (or ultrahigh vaccum, or whatever) is, in fact, less harsh than the one on Mars.

Re:Atmosphere?

[ceoyoyo]

Maybe. The atmosphere of Mars also provides a not-insignificant amount of pressure, making it easier to build and less of a catastrophe if you get a leak. Also less of a catastrophe if you happen to puncture your suit. It also provides gasses to use in a greenhouse. The atmosphere might leech heat from things that are uninsulated, but it also regulates heat so you don't have the same extent of baking and freezing that the moon has.