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Switch to Forum Live View NASA plans to send men to asteroids by 2025
4 years ago  ::  Mar 28, 2011 - 7:35PM #21
Ebon
Posts: 10,148

Mar 28, 2011 -- 7:07PM, Bluedog1a wrote:

Aren't asteroids loaded with iron, nickel and other metals?



Some are, yeah. The potential motherlode of minerals is one of the main reasons to do this.

He who oppresses the poor shows contempt for their Maker, but whoever is kind to the needy honors God. ~ Proverbs 14:31

Fiat justitia, ruat caelum

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4 years ago  ::  Mar 28, 2011 - 11:58PM #22
teilhard
Posts: 51,385

Any "Minerals" mined from an "Asteroid" for return to be used on The Earth would be WILDLY more Expensive than anything mined on and from The Earth ... UNLESS the mined Materials will be used IN Space ...


Mar 28, 2011 -- 7:07PM, Bluedog1a wrote:


Aren't asteroids loaded with iron, nickel and other metals?





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4 years ago  ::  Mar 29, 2011 - 12:48AM #23
Ebon
Posts: 10,148

Mar 28, 2011 -- 11:58PM, teilhard wrote:

Any "Minerals" mined from an "Asteroid" for return to be used on The Earth would be WILDLY more Expensive than anything mined on and from The Earth ... UNLESS the mined Materials will be used IN Space ...



That's one possibility. It's also possible we'll discover entirely new minerals or plentiful supply of minerals which are rare on earth (for example, all it takes to form diamond is carbon and very high pressure at low tempratures and carbon is the most fourth abundant element in the universe).


Also, that's only true for now. Raw economics says that we will eventually reach a point where we have stripped so many minerals from the earth's crust that it will become more economically viable to return them from asteroids than to mine them from the earth. It's the same principle as oil. When oil is $20 a barrel, it's only worth going after the liquid crude that practically bursts out of the ground but if you're willing to pay $120 a barrel (and apparently, you are), it's worth it to melt sand and squeeze the petroleum out of it.

He who oppresses the poor shows contempt for their Maker, but whoever is kind to the needy honors God. ~ Proverbs 14:31

Fiat justitia, ruat caelum

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4 years ago  ::  Mar 29, 2011 - 11:21AM #24
teilhard
Posts: 51,385

The Earth is a VERY remarkably "differentiated" Planet, hosting literally THOUSANDS of Minerals ...


The most likely Bonanza from an "Asteroid" would be deposits of some rare Elements, but even then, the mining and processing in and transport in and from Space ... would be VERY expensive ...


Mar 29, 2011 -- 12:48AM, Ebon wrote:


Mar 28, 2011 -- 11:58PM, teilhard wrote:

Any "Minerals" mined from an "Asteroid" for return to be used on The Earth would be WILDLY more Expensive than anything mined on and from The Earth ... UNLESS the mined Materials will be used IN Space ...



That's one possibility. It's also possible we'll discover entirely new minerals or plentiful supply of minerals which are rare on earth (for example, all it takes to form diamond is carbon and very high pressure at low tempratures and carbon is the most fourth abundant element in the universe).


Also, that's only true for now. Raw economics says that we will eventually reach a point where we have stripped so many minerals from the earth's crust that it will become more economically viable to return them from asteroids than to mine them from the earth. It's the same principle as oil. When oil is $20 a barrel, it's only worth going after the liquid crude that practically bursts out of the ground but if you're willing to pay $120 a barrel (and apparently, you are), it's worth it to melt sand and squeeze the petroleum out of it.





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4 years ago  ::  Mar 29, 2011 - 1:42PM #25
Yavanna
Posts: 3,149

Mar 29, 2011 -- 11:21AM, teilhard wrote:


The Earth is a VERY remarkably "differentiated" Planet, hosting literally THOUSANDS of Minerals ...


The most likely Bonanza from an "Asteroid" would be deposits of some rare Elements, but even then, the mining and processing in and transport in and from Space ... would be VERY expensive ...


Mar 29, 2011 -- 12:48AM, Ebon wrote:


Mar 28, 2011 -- 11:58PM, teilhard wrote:

Any "Minerals" mined from an "Asteroid" for return to be used on The Earth would be WILDLY more Expensive than anything mined on and from The Earth ... UNLESS the mined Materials will be used IN Space ...



That's one possibility. It's also possible we'll discover entirely new minerals or plentiful supply of minerals which are rare on earth (for example, all it takes to form diamond is carbon and very high pressure at low tempratures and carbon is the most fourth abundant element in the universe).


Also, that's only true for now. Raw economics says that we will eventually reach a point where we have stripped so many minerals from the earth's crust that it will become more economically viable to return them from asteroids than to mine them from the earth. It's the same principle as oil. When oil is $20 a barrel, it's only worth going after the liquid crude that practically bursts out of the ground but if you're willing to pay $120 a barrel (and apparently, you are), it's worth it to melt sand and squeeze the petroleum out of it.









Only at first. Once it's standardized it'd be cheaper than some projects on Earth.

The dwarves of yore made mighty spells,
While hammers fell like ringing bells
In places deep, where dark things sleep,
In hollow halls beneath the fells.

For ancient king and elvish lord
There many a gloaming golden hoard
They shaped and wrought, and light they caught
To hide in gems on hilt of sword.
- J.R.R. Tolkien
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4 years ago  ::  Mar 29, 2011 - 3:29PM #26
Christianlib
Posts: 21,848

Or, if we believe all the Disaster Fiends, and Hollywood, we can just wait for the asteroids to come to us.  They should be here any day now.

Democrats think the glass is half full.
Republicans think the glass is theirs.
Libertarians want to break the glass, because they think a conspiracy created it.
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4 years ago  ::  Mar 29, 2011 - 5:09PM #27
solfeggio
Posts: 9,333

Teilhard is right.  The expense involved in getting all these minerals (or whatever) from asteroids would be so wildly expensive as to make the whole project infeasible.


In any case, your own NASA has admitted that they cannot even afford to track asteroids, much less visit them in future.


I can't believe you people are serious.

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4 years ago  ::  Mar 29, 2011 - 5:26PM #28
Christianlib
Posts: 21,848

I'm seldom serious.  Why should I be?  You read this place.

Democrats think the glass is half full.
Republicans think the glass is theirs.
Libertarians want to break the glass, because they think a conspiracy created it.
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4 years ago  ::  Mar 29, 2011 - 5:35PM #29
allthegoodnamesweretaken
Posts: 11,634

I think your missing the boat by thinking it should be up to NASA. 


Tell the corporations that the first one to send a man to the asteroids will have exclusive rights to them for a decade. 


Have them pave the way, and incur the expense, and let them have a chunk of the profit for it.  Once they've figured out how to do it, and have proven that they know how, open it up for everyone. 


 


all

Yesterday, in America, 100 million gun owners did nothing.
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4 years ago  ::  Mar 29, 2011 - 8:57PM #30
Yavanna
Posts: 3,149

Mar 29, 2011 -- 5:09PM, solfeggio wrote:


Teilhard is right.  The expense involved in getting all these minerals (or whatever) from asteroids would be so wildly expensive as to make the whole project infeasible.


In any case, your own NASA has admitted that they cannot even afford to track asteroids, much less visit them in future.


I can't believe you people are serious.





It'd help if you read a book or two.

The dwarves of yore made mighty spells,
While hammers fell like ringing bells
In places deep, where dark things sleep,
In hollow halls beneath the fells.

For ancient king and elvish lord
There many a gloaming golden hoard
They shaped and wrought, and light they caught
To hide in gems on hilt of sword.
- J.R.R. Tolkien
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