Every few years asteroid mining returns to the headlines as a trillion-dollar gold rush waiting to happen, usually attached to a single staggering number about how much some metal-rich rock is theoretically worth. It is a genuinely exciting idea. It is also one where the economics tend to run in the opposite direction to the pitch.
I am a writer with a long interest in this beat, not an engineer or an economist, so take this as a careful reading of the material rather than expert testimony. The short version is that the case for asteroid mining is real, but almost nothing like the version that gets sold.
The graveyard of the first gold rush
This has been tried before, with serious money behind it. In the 2010s two well-funded companies, Planetary Resources and Deep Space Industries, set out to mine asteroids and drew backing from high-profile investors.
Neither mined anything. As CNBC reported, both ran short of the money needed to cover enormous development costs and were absorbed by other companies by 2018 and 2019, one of them pivoting to blockchain. The lesson was not that the resources are not there. It was that the timelines are long, the capital required is vast, and investors ran out of patience long before anyone reached an asteroid.
Why the trillion-dollar numbers mislead
The valuations that drive the headlines are the least useful part of the story. The metal asteroid 16 Psyche is often quoted as being worth something like ten quintillion dollars, a figure that dwarfs the entire world economy.
Two things are wrong with reading that as a business plan. The first is that the number assumes you could deliver all that metal to Earth at no cost, when the delivery is the entire problem. The second is more fundamental: if you actually did land that much platinum or gold, you would flood the market and collapse the price of the thing you came to sell. The markets for precious metals are small by weight, and they do not have room to absorb asteroid-scale quantities without the value evaporating.
It is worth adding that NASA’s Psyche mission, now on its way to the asteroid, is not a mining venture at all. It is a science mission to study a metal-rich world, which the agency now estimates is somewhere between 30 and 60 per cent metal. Nobody is going to mine Psyche, and there is no technology that could.
The prize that actually adds up is water
Strip out the gold-rush fantasy and a more sober case remains, and it is not about bringing anything home at all.
The expensive part of anything in space is lifting mass off the Earth against its gravity. A litre of water already in orbit is therefore worth far more than a litre sitting in a reservoir here, because you have not had to pay the enormous cost of launching it. Many asteroids, the dark carbonaceous ones, are thought to hold water ice, and water can be split into hydrogen and oxygen, which is rocket fuel, or used directly for life support.
So the version of asteroid mining that pencils out is not platinum sold on Earth. It is water and simple materials mined in space and used in space, to refuel spacecraft and supply habitats without hauling everything up from the ground. An analysis in the Harvard International Review makes this point plainly: the real economic logic points to servicing activity in orbit and beyond, not to enriching commodity markets back home.
This is a much less glamorous business than a space gold rush, and it is also the only one that currently makes physical sense.
The current attempt
A new generation is trying anyway, with more modest aims. The startup AstroForge is the most visible, and its record so far is a fair snapshot of how hard this is.
Its Odin spacecraft launched in February 2025 to scout a metallic near-Earth asteroid, but the company lost contact with it not long after deployment, ending the mission early. A follow-up probe, Vestri, is intended to actually dock with a small metallic asteroid, which would be a real first for a private spacecraft. It has not happened yet.
The targets, sensibly, are near-Earth asteroids, the ones whose orbits bring them close to us and make them reachable with reasonable amounts of fuel. These are the same objects we track for planetary defence, including ones like Apophis, which will pass close to Earth in 2029. Accessibility, not raw value, is what makes an asteroid worth visiting.
None of this is investment advice, and I have no idea whether any of these companies will succeed. What I can say is that the sober question worth watching is not which rock is worth the most on paper. It is whether anyone can mine water in space and sell it to the next spacecraft, because that, and not a platinum windfall, is the business that would actually change how we operate off the Earth.
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