Moon 'has a litre of water for every tonne of soil'

[keep_it_real]

How many litres before I can have a nice size pool to swim in on the moon?

http://www.timesonline.co.uk/tol/news/science/space/article6847457.ece

[Avalux]

1. That's just great. Guess what'll happen next?

Giant hose from the moon to earth! x(

[stevedeshazer]

2. All bets are off if they discover oil.

We can send Dick Cheney there to drink it.

[demwing]

11. If they discover oil, do we get it, since we got there first?

Actually, just answered my own question - NOPE. there is a UN Outer Space Treaty
http://www.oosa.unvienna.org/oosa/SpaceLaw/outerspt.html

Which includes the following principles:

• the exploration and use of outer space shall be carried out for the benefit and in the interests of all countries and shall be the province of all mankind;
  
• outer space shall be free for exploration and use by all States;
  
• outer space is not subject to national appropriation by claim of sovereignty, by means of use or occupation, or by any other means;
  
• States shall not place nuclear weapons or other weapons of mass destruction in orbit or on celestial bodies or station them in outer space in any other manner;
  
• the Moon and other celestial bodies shall be used exclusively for peaceful purposes;
  
• astronauts shall be regarded as the envoys of mankind;
  
• States shall be responsible for national space activities whether carried out by governmental or non-governmental activities;
  
• States shall be liable for damage caused by their space objects; and
  
• States shall avoid harmful contamination of space and celestial bodies.

[stevedeshazer]

15. Wow

I had no idea this existed.

Thanks.

[demwing]

3. A cubic meter of will hold 1000 liters of water

If your pool is about 300 cubic meters (2 meters deep * 15 meters long * 10 meters wide), it will hold 300,000 liters of water
And, if as you said, there is 1 liter per every tonne of moon soil, then you will have to remove the water from about 300,000 tonnes of soil to fill this pool.

Now, 1 tonne of soil = about .86 cubic meters, so:
300,000 tonnes of soil would leave a hole in the moon of about 258,000 cubic meters large

Assuming you used this hole as your pool:
258000/300000 = 1.16, or 1.16 liters per cubic meter
And since 1 cubic meter holds 1000 liters, your pool would only be a little less than .12% full

Now to get a pool that was filled with water 2 meters deep, your overall pool dimensions would have to be 15 meters long * 10 meters wide * 1720 meters deep.

Thats about 1 mile deep. A bit more really. Talk about your high dives...

[kentauros]

4. And in the lower gravity, sloshing would be a major problem

not to mention the weird dynamics of swimming in low-gravity ;)

[keep_it_real]

6. But can you imagin sloshing around and seeing the earth in distant horizon?

[kentauros]

10. Hell, I can hardly imagine just BEING there,

much less sloshing around in 1/6th Earth's gravity :P

[keep_it_real]

5. Thanks, but what the hell do you do for fun?

[gristy]

8. The poster knows how to think critically and express what he figured out

You got a problem with that? :D

[demwing]

9. Well, this was pretty fun, lol

I imagine a pool 1 mile deep, with only 6 feet of water at the bottom, and it scares the crap outta me

[gristy]

7. good job!

:thumbsup:

[NYC_SKP]

12. True, at Standard Atmospheric Pressure and Temperature. But on the Moon your numbers are no good.

Try again.

:evilgrin:

[demwing]

14. But since we start with the assumption that the moon has 1 liter per tonne

even though the weight and density of the water on the moon--per liter--may vary, a liter on the moon is still a liter.

[demwing]

13. BTW - if you were to dive into the pool from a mile high on the moon

Even though the moon's gravity is 1/6th Earth's, there is no atmosphere, so the Moon has no terminal velocity (the decline in rate of speed of a falling object caused by air resistance).

Dive into the pool from a mile up, and you will continue to accelerate at a rate of 1.6 meters per second for each second you fall. The only thing that will slow you down will be hitting the moon.

Unfortunately, your fall will take approximately 45 seconds, and by the time you hit bottom, you'll be traveling at the rate of 75 meters per second, or 4512 meters per minute, or 270720 meters per hour, roughly the equivalent of 157 miles per hour.

Ouch.