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36 votes

Could there be any use with importing vacuum from space to Earth?

There are multiple problems with this idea. The first and most obvious problem is that the sealed container which has a perfect vacuum inside (seller claims so at least) is not of much use until you ...
Martin's user avatar
  • 1,831
17 votes

Could there be any use with importing vacuum from space to Earth?

According to WP, at the upper end of Earth thermosphere -- that's LEO, somewhere above the orbit of ISS -- the pressure goes to around $1 \times 10^{-7}$ Pa. This level of vacuum is regularly ...
Russell Borogove's user avatar
13 votes
Accepted

moon structure ownership

There are two schools of thought discussed in Asteroid Mining: International and Legal Aspects by Frans G. von der Dunk: Perspective 1: The US and countries like Luxembourg believe that any resources ...
Prashanth Chandrasekar's user avatar
12 votes

Most attractive resource on the Moon

First off almost all resource extraction in space is really only remotely close to cost effective if the resources themselves are used in space. The general number thrown around is ~$10,000 per ...
Josh King's user avatar
  • 2,429
11 votes

Sub Lunar Mining

From the title of the question I assume you are asking about underground mining on the Moon. In terms of underground mining on the Moon we practically know nothing. There were very few holes drilled ...
Fred's user avatar
  • 13.1k
11 votes
Accepted

How can we source potassium fluoride outside of Earth?

Most fluorine compounds are ultimately produced from fluorite mineral deposits, which in turn were produced hydrothermally, by hot water percolating through igneous rock. Particularly "felsic&...
Christopher James Huff's user avatar
10 votes
Accepted

How could the presence of 3He be detected on the lunar surface?

NASA [1] indicates that helium-3 can be assessed indirectly by measuring the presence of titanium dioxide and soil characteristics ("maturity"), the correlation having been derived from the study of ...
Oscar Lanzi's user avatar
  • 8,525
10 votes
Accepted

Are there hydrocarbons on the Moon?

I think the poster was mistaken about hydrocarbons being on The Moon. We know some planets (like Mars) and moons (like Titan) have them, but not Earth's. The Moon does have water, however. What ...
Machavity's user avatar
  • 7,905
10 votes
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Copper abundance in the Moon

I'd advise strong caution as to drawing conclusions as to what there is and isn't on the Moon, as all we know comes from a few trunk-loads of rocks, satellite imagery, and theory, which in planetary ...
kim holder's user avatar
  • 21.4k
9 votes

How can we source potassium fluoride outside of Earth?

The formation of carbonates requires liquid water. Potassium fluoride can be formed from potassium carbonate. The Moon is yet to indicate it ever had liquid water, but Mars has had liquid water and ...
Fred's user avatar
  • 13.1k
8 votes
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How might water floating in space be 'mined'?

The short answer to the actual question asked: you might do it electrostatically, but it would require huge amounts of power. The extended short answer: the water, though a nearly incredible mass of ...
Tom Spilker's user avatar
  • 18.3k
7 votes
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Is there a method for finding the chemical composition of asteroids?

Reflection spectroscopy in visible and IR wavelengths (using sunlight reflected from asteroids and collected by ground- and space-based instruments) allows for chemical and mineralogical ...
Rex Ridenoure's user avatar
7 votes

How deep could a lunar mine go?

I came here with the same question. While rock pressure is one issue, I think the limiting factor is actually heat. The most recent paper I could find on Lunar temperature gradients is Nimmo 2012, ...
Andy Jones's user avatar
6 votes
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Manufacturing solar cells on the Moon

Perovskites may prevent the need for such complex manufacturing facilities. https://www.nasa.gov/feature/glenn/2019/building-solar-panels-in-space-might-be-as-easy-as-clicking-print Perovskites are ...
DJG's user avatar
  • 804
6 votes
Accepted

Full lunar mineralization/ore map

Here's the labelled version you found of the USGS map large enough to read the text For completion's sake, here's a mirror, limited by the 2MB upload size of SE, so it's only barely readable. The link ...
SE - stop firing the good guys's user avatar
5 votes
Accepted

How could you create water and air from materials in the Solar System?

Water- Can be obtained from pretty much any non-gas giant object beyond the middle of the asteroid belt. This includes comets, moons of outer solar system planets, even objects like Pluto, etc. ...
PearsonArtPhoto's user avatar
  • 121k
5 votes
Accepted

Why is the LROC lunar data not showing farside of the moon?

You have to select the correct projection to see the far side of the Moon: It is the top tab in the side bar.
BrendanLuke15's user avatar
4 votes

Most attractive resource on the Moon

Lunar ice may be of some importance for a different reason: its possible role in making iron and steel. On Earth, we commonly use carbon (coke) to smelt iron from its oxides, thus to make steel. But ...
Oscar Lanzi's user avatar
  • 8,525
4 votes

How might water floating in space be 'mined'?

That reservoir? Mere 12 billion light years away. So even traveling at speed of light - taking space expansion into account, you'd have some 30 billion years of round-trip. It's a curious discovery ...
SF.'s user avatar
  • 55k
4 votes

How deep could a lunar mine go?

A point of correction – me being pedantic. Mine shafts on earth are limited in how deep they can go by two things, internal heat and rock pressure. This is not correct. Remove the word shafts and ...
Fred's user avatar
  • 13.1k
4 votes

How deep could a lunar mine go?

If we just look at rough numbers, we know the gravity on the Moon is ⅙th that of Earth so a mine shaft should go to a depth six times as deep as on Earth. So if the deepest shaft on Earth is just ...
Charles Lee Lesher's user avatar
4 votes
Accepted

Chemical resources on the moon in relation to human occupation

The Moon is depleted of carbon, and what little carbon there is is in form of nonorganic compounds. Except for CO2 (which is nonorganic), life likes to work with organic compounds as opposed to ...
David Hammen's user avatar
4 votes

Manufacturing solar cells on the Moon

Lunar Reources Inc. proposes to manufacture solar panels in situ by electrolyzing the lunar regolith to seperate the various components (metals, silicon, oxygen, etc.) and vacuum-depositing material ...
f_n_lyre's user avatar
  • 101
3 votes
Accepted

Could customary law realistically be used to block commercial use of the moon's resources?

Wildly unrealistic for many reasons, but I'll just focus on the legal ones. First, as you say, the Moon Treaty is not widely ratified. Those countries that HAVE ratified the Agreement are of course ...
SpaceLawyer's user avatar
  • 1,428
3 votes

Can materials be found to make plastic on Mars?

As a follow-up to this answer, there is recent news in the catalytic conversion of methane to ethylene. From Phys.org's January 2018 article New, low cost alternative for ethylene production: ...
uhoh's user avatar
  • 149k
3 votes

Can materials be found to make plastic on Mars?

Also, once a few polymer greenhouses have been set up, plants high in cellulose can be grown in them. The plants convert the carbon dioxide pumped into the pressurized greenhouses into cellulose, ...
wafflecat's user avatar
  • 131
3 votes

What resources could be gained from asteroid mining that would be worth the effort?

Not a single poster has mentioned cobalt. Chondritic metal is an alloy of siderophiles (“iron-loving” elements), the next after the host iron being nickel, then cobalt. Nickel is not particularly ...
caInstrument's user avatar
3 votes

How many companies currently specialize in (the research of) asteroid mining?

For a company to "specialize in" something it must actually engage in that something. Currently there is no company that is mining any asteroids and therefore there are no companies that "specialize ...
user2705196's user avatar
  • 1,307
3 votes

Full lunar mineralization/ore map

According to the Universe Today website, the US Geological Service (USGS) has produced a geological map of the Moon, that is available online. This is also an animation of the globe of the Moon. The ...
Fred's user avatar
  • 13.1k
3 votes
Accepted

How to transport C and N₂ from Mars to the Moon?

A relatively simple device could be built and sent to Mars to produce hydrogen cyanide. Methane, ammonia and oxygen would be extracted from the atmosphere and reacted over a catalyst using the ...
Anthony Stevens's user avatar

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