Asteroid mining and why water comes first

Asteroid Mining and Why Water Comes Before Platinum on the Path to Abundance

Last checked: October 2026. Missions, company plans, and national space laws in this field change quickly.

Popular stories about asteroid mining usually start with a rock full of platinum worth more than the whole economy of Earth. This page argues for a different and more useful picture: the first valuable thing to mine in space is most likely ordinary water, sold in space as drinking water, breathable oxygen, and rocket propellant, and the real path to abundance runs through making space activity less expensive rather than through shipping precious metals home. The page serves the futurism and abundance goals of this wiki. It asks how humanity might move from a closed planet with fixed reserves toward a much larger resource base, and it treats that as a research question with real evidence, real failures, and open legal problems, not as a promise.

The platinum story and its hidden flaw

Platinum group metals are expensive because they are scarce. A company that brought home a large amount would increase supply, and prices would fall, possibly by a great deal. A business plan that multiplies a huge tonnage by the present market price therefore defeats itself: the more it delivers, the less each kilogram is worth. For people who care about abundance, that price drop would be welcome, because it would make catalysts and electronics less expensive. For an investor, it means the headline valuations of famous asteroids are close to meaningless.

There is also a scale problem. Every sample of asteroid material that spacecraft have returned so far has been measured in grams:

• The Japanese Hayabusa2 mission returned about 5.4 grams of material from the near Earth asteroid Ryugu in December 2020, and the sample was described as primitive material rich in water and organic matter.
• The NASA OSIRIS-REx mission delivered 121.6 grams from the asteroid Bennu, the largest asteroid sample ever collected in space. Later studies reported molecules that are key to life on Earth and a history of saltwater on the parent body.
• The NASA Psyche spacecraft, launched on 13 October 2023, is travelling to a metal rich asteroid that may be the partial core of an early planet building block. It is a science mission, planned to begin exploring Psyche by August 2029, not a mining mission.

Grams of returned material are a remarkable scientific result. They are also a reminder that industry would need a jump of many orders of magnitude.

Why water is the first ore

Almost everything used in space today is launched from the bottom of the deep gravity well of Earth, and launch mass is costly. NASA describes oxygen, water, and methane as some of the most promising space based commodities, because they could substantially reduce the mass, cost, and risk of exploration. They are needed for crew survival and for propulsion and power, and water deposits exist in lunar, Martian, and asteroid soil. The process is simple in principle: dig out icy or water bearing material, heat it, purify the water, and split it by electrolysis into hydrogen and oxygen. A NASA technology assessment notes that one of the most valuable uses of lunar water is rocket propellant, and that the water must first be separated from other volatiles and purified before electrolysis.

The point is that a liter of water already in orbit could be worth far more than a liter of water on Earth, because it saves the cost of launching it. That value exists only for customers in space, which is why the first market is spacecraft, stations, and lunar bases rather than jewelers. The early companies understood this. Planetary Resources, announced in 2012, originally planned to prospect near Earth asteroids for water ice that could be extracted and sold as propellant.

The boom and bust of the first wave

The first generation of asteroid mining companies did not survive in their original form. Planetary Resources suffered funding problems and was bought by the blockchain company ConsenSys in an asset purchase announced on 31 October 2018. Deep Space Industries, founded in 2012 to prospect for resources such as water ice, was acquired by Bradford Space in January 2019 after shifting toward small satellites and a thruster called Comet that used water as propellant. Reporting at the time linked the decline partly to a change in NASA priorities, from near Earth asteroids toward the Moon.

A newer company, AstroForge, launched a small probe named Odin on 26 February 2025 to fly by the near Earth asteroid 2022 OB5. The company built it in under ten months for about 3.5 million dollars, but it could not establish steady communication, and by 6 March the company said the chance of talking with Odin was minimal. Low cost, fast missions accept a high chance of failure in exchange for learning quickly. Whether that approach can reach an operating mine is still an open question.

The lesson for students of abundance is that technology alone does not create a market. The water first strategy needs customers in space who are ready to buy propellant, and those customers depend on government programs and on launch prices that keep changing.

Who owns what is mined

The 1967 Outer Space Treaty says that outer space, including the Moon and other celestial bodies, is not subject to national appropriation by claim of sovereignty, by means of use or occupation, or by any other means. National laws have since tried to separate the place from the material taken out of it.

• The United States Commercial Space Launch Competitiveness Act, approved on 25 November 2015, says a United States citizen engaged in commercial recovery of an asteroid or space resource is entitled to possess, own, transport, use, and sell it, while Congress states that it does not claim sovereignty over any celestial body.
• A Luxembourg law signed on 20 July 2017 states in its first article that space resources are capable of being appropriated, and requires mission by mission government authorization for companies based there.
• Section 10 of the Artemis Accords affirms that extracting space resources does not inherently constitute national appropriation under the treaty, and commits signatories to inform the United Nations and the public about extraction activities. NASA reports that Uzbekistan became the 77th nation to sign the accords on 19 October 2026.

This is where freedom and fairness enter the picture. Rules written early, by a small number of countries with launch capacity, may decide who benefits from the resources of the solar system for a very long time. A world that moves toward abundance would need rules that are transparent, that keep space open to newcomers, and that avoid turning a new frontier into a fresh form of artificial scarcity.

Honest limits

• No company has yet mined an asteroid, and every figure on this page refers to science samples, laws, or plans.
• The water first argument depends on a future market in space that does not yet exist at scale.
• Legal questions about property in space resources are unsettled and are disputed among countries and scholars. This page is a learning overview, not legal or investment guidance.
• Mining in space could create new problems, including debris and conflicts over the best sites.

Research questions worth pursuing

1. At what launch price does water mined in space become less expensive than water launched from Earth for a given orbit?
2. Would a lunar water source or a near Earth asteroid be the easier first supplier, and why?
3. How could revenue from space resources be shared in a way that supports a broader abundance, for example through a fund that pays a dividend?
4. What does the failure of the first wave of companies teach about funding long research projects?

Discussion questions, essay ideas, and learning related AI prompt ideas

• Why would a large supply of asteroid platinum lower its price, and who would benefit from that drop?
• Is a liter of water in orbit more valuable than a gram of gold on Earth? Explain the conditions under which that could be true.
• Write an essay comparing the Outer Space Treaty with the 2015 United States law and the 2017 Luxembourg law on space resources.
• Write an essay on whether space resources should be treated as a commons, as private property, or as something in between.
• Ask an AI system to explain how electrolysis turns water into rocket propellant, using plain language and one simple diagram described in words.
• Ask an AI system to list the reasons Planetary Resources and Deep Space Industries changed course, and then quiz me on the lessons.
• Ask an AI system to help me design a classroom debate on who should own resources mined from asteroids.

See also

• Post-scarcity economy
• Desalination and water abundance
• Energy costs and abundance
• Time prices and abundance
• Backing up civilization
• Microbial protein and food abundance
• Mining
• Astronomy