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Author Topic: The Moon Rich In Helium 3.  (Read 4575 times)

Offline Titanscape

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The Moon Rich In Helium 3.
« on: 11/09/2007 18:11:42 »
Have you heard of mining the moon for Helium 3, as fuel, the 21st century fuel?


 

another_someone

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The Moon Rich In Helium 3.
« Reply #1 on: 11/09/2007 22:39:06 »
There has been talk about a slightly greater abundance of Helium 3 on the moon than exists on the Earth, but in neither place can it be considered to be particularly abundant.  It has been proposed to use Helium 3 as a fuel component in fusion reactors (none of which has yet proved successful), but it does seem dubious that from either the Moon, nor from the Earth, or any of the gas giants (which, like the Moon are supposedly relatively richer than the Earth in Helium 3) that we would get enough of the stuff to make it economic to use as a fuel.
 

Offline Bass

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The Moon Rich In Helium 3.
« Reply #2 on: 12/09/2007 01:57:02 »
Helium 3 is more abundant in the earth's mantle than in the crust.  Places like Iceland and Hawaii produce relatively more He3 than other spots on earth, since the volcanoes supposedly tap  mantle sources- but not anywhere near enough of the isotope to lend itself to commercial collection.

Does He3 still make you talk funny?
 

Offline Bored chemist

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The Moon Rich In Helium 3.
« Reply #3 on: 12/09/2007 20:03:24 »
He3 is even lighter than ordinary He so it should make you talk even funnier.
The price isn't funny.
 

Offline dkv

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The Moon Rich In Helium 3.
« Reply #4 on: 15/09/2007 12:59:04 »
Why the Helium couldnt escape the Moon's atmosphere?
Under what cirumstances He3 can exist ?
If once there was an any sense of atmoshere or was part of a planet having atmosphere then heavier gases should have been found.
Is moon a remnant of a Helium Star which exploded deep in the past and was captured by the Earth?
 

another_someone

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The Moon Rich In Helium 3.
« Reply #5 on: 15/09/2007 14:32:46 »
Why the Helium couldnt escape the Moon's atmosphere?
Under what cirumstances He3 can exist ?
If once there was an any sense of atmoshere or was part of a planet having atmosphere then heavier gases should have been found.
Is moon a remnant of a Helium Star which exploded deep in the past and was captured by the Earth?


No, the moon is a remnant of our star (i.e. the Sun), which still produces helium.

As the Sun burns, it ejects lots of gas into the space around it - this gas includes 3He.  As the gas (very low density by the time it travels the 93 million miles to Earth, but still part of the space around the Earth) then impacts the surface of the moon (the surface of the Earth is not reached because the atmosphere gets in the way), it then gets embedded into the rock on the surface of the moon.
 

Offline dkv

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The Moon Rich In Helium 3.
« Reply #6 on: 15/09/2007 14:57:23 »
but why earth is not having enough He3?
 

another_someone

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The Moon Rich In Helium 3.
« Reply #7 on: 15/09/2007 17:29:41 »
but why earth is not having enough He3?

As I mentioned above - the Earth's atmosphere stops the 3He reaching the ground, and as it remains in the upper atmosphere as a gas, it quickly escapes again back out into space.  The Moon does not have this protective atmosphere.
 

Offline dkv

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The Moon Rich In Helium 3.
« Reply #8 on: 15/09/2007 17:58:04 »
There is a flaw ...
If the earth is not able draw the He3 towards the surface then how is it possible that the Moon with fraction of gravity can carry He3 in its atmosphere?
Note that He3 is a inert gas and can easlily reach the Earth using osmosis.He3 is like a ball which has no relation with air.  A single atom of He3 can always find its natural center of gravity...
 

another_someone

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The Moon Rich In Helium 3.
« Reply #9 on: 15/09/2007 18:41:12 »
There is a flaw ...
If the earth is not able draw the He3 towards the surface then how is it possible that the Moon with fraction of gravity can carry He3 in its atmosphere?

Who said anything about 3He being drawn to the surface of the Moon, or the Earth, by the gravity of those bodies.  3He is being blasted out of the Sun by the force of the thermonuclear explosion that is going on within the Sun, and is getting blasted at supersonic speeds towards anything and everything that happens to get in its way.

Note that He3 is a inert gas and can easlily reach the Earth using osmosis.He3 is like a ball which has no relation with air.  A single atom of He3 can always find its natural center of gravity...

I have great difficulty understanding what it is you are trying to say here?

Osmosis has nothing to do with anything we are dealing with here.  Osmosis is a process concerning the transport of substances across a semi-permeable membrane - where is there a membrane here (unless you are regarding the Earth's atmosphere as a membrane)?

 

Offline dkv

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The Moon Rich In Helium 3.
« Reply #10 on: 15/09/2007 18:56:43 »
So you mean to say that He3 is not natural feature of Moon.
Its availability in the atmosphere is subjected to a process which involves Sun ?
Without which Moon can not keep its atmosphere.
Is that correct?
 

another_someone

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The Moon Rich In Helium 3.
« Reply #11 on: 15/09/2007 20:41:03 »
So you mean to say that He3 is not natural feature of Moon.
Its availability in the atmosphere is subjected to a process which involves Sun ?

Yes, exactly so.

Without which Moon can not keep its atmosphere.
Is that correct?

It is not strictly an atmosphere - the 3He is buried in the rock rather than being floating above the rock as an atmosphere.
 

Offline dkv

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The Moon Rich In Helium 3.
« Reply #12 on: 15/09/2007 21:03:06 »
oh ok i thought the atmosphere was there.
So there is no atmosphere.
Good.
 

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The Moon Rich In Helium 3.
« Reply #12 on: 15/09/2007 21:03:06 »

 

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