Mining asteroids for metals and fuel may enable sustainable Mars colonies by reducing reliance on Earth-based resources and lowering mission costs.
Could the rocks floating through space one day help humanity survive on another world? Scientists are beginning to explore whether asteroids could provide the metals and fuel needed to make Mars habitable.
I watched Armageddon again fairly recently with Bruce Willis, oil drillers in space, and an asteroid the size of Texas bearing down on Earth. Buried beneath the Hollywood chaos is a genuinely interesting question: what exactly could we do with an asteroid if we got our hands on one? As it turns out, the answer has nothing to do with blowing it up, sorry Bruce, but everything to do with building a new world.
Building a colony on Mars is not just an engineering problem; it’s a logistics one too. The logistics, unglamorous as it sounds, may ultimately determine whether humanity becomes a multi-planetary species or stays firmly rooted on Earth.
The Logistics Challenge of a Mars Colony
Think about what a Mars colony actually needs. Not just food and oxygen, but metal. Structural steel for habitats, aluminum for equipment, iron for tools, and many of the components will wear out, break, and need replacing. Shipping all of that from Earth every time is not a serious long-term strategy.
A rocket launch costs tens of millions of pounds per ton of cargo, and the journey to Mars takes between six and nine months, depending on where the two planets happen to sit in their orbits. You cannot run a hardware store on that kind of supply chain.
A new study from researchers at EPFL in Switzerland has now done the hard math on mining asteroids and delivering the metals directly to Mars. The solar system contains millions of asteroids, and the metallic ones, known as M-type asteroids, are essentially giant lumps of iron, nickel, and other valuable materials floating through space. The question is whether we can actually reach them, extract what we need, and get it to Mars efficiently enough to make it worthwhile.
The answer, it turns out, is a careful yes, but with conditions.
Asteroid Supply Chains and Fuel Innovation
The team ran a computer program that tests thousands of different combinations to find the best possible answer across multiple supply chains. They considered the energy required to travel between different asteroids and Mars, the mass of metals that could realistically be extracted, and, crucially, the fuel needed for the return journey.
That last point is where a clever twist enters the picture. Some asteroids are carbonaceous; they are rich in carbon and water ice. Process those materials correctly, and you can manufacture rocket propellant right there in space, eliminating the need to carry return fuel from Earth. The study builds this possibility directly into the supply chain calculations.
Viable Targets and the Future of the Space Industry
The results identify specific asteroids that sit within reach of current spacecraft technology, where the energy cost of getting there and back is low enough to make the mission viable. The team soon learned that selecting the right targets is everything. A poorly chosen asteroid could consume more fuel than the value of the metals it delivers.
What makes this study significant is not that it solves the problem, because we are still a long way from the first asteroid mining operation. Instead, it demonstrates that the problem is 100% solvable. A supply chain delivering metals from space to Mars, fueled by propellant manufactured on the asteroids themselves. The colony on Mars will need builders. It will also need someone to sort out the deliveries, and this study shows it can be done.
Reference: “Asteroid Mining to Sustain a Mars Colony: A Logistics Point of View” by Serena Suriano, Shamil Biktimirov, Dmitry Pritykin and Anton Ivanov, 20 April 2026, arXiv.
DOI:10.48550/arxiv.2604.18664
Adapted from an article originally published in UniverseToday.
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7 Comments
If 3I ATLAS is travelling in a dark matter stream that stream may have interacted with the asteroid belt. This stream would still be passing through the asteroid belt on an ongoing basis. It may also have been there before 3I arrived. There may be other objects being carried by that stream. Some fireballs may be from the solar system of origin billions of years ago. Some of these fireballs may have been flushed out of the asteroid belt both before and after 3I ATLAS passed. The asteroids hitting the dark side of the moon aligned with the direction 3I ATLAS came from. The Aurora may have been Liquid Dark Matter phase transitions from material from 3IATLAS
The difference between scrapping a multimillion-dollar mining machine and building a new one that mines ore for a dollar a cubic yard less is very small.
This estimation is obviously one made by students who have never rubbed elbows with a mining engineer.
And so you’re want to do WHAT?! Ridiculous.
Kind of my thoughts as well. It would be cheaper and more realistic to mine Mars itself. Only in Saberhagen’s books ‘Berserkers’ does mining asteroids make economic sense. Beserkers were the original AI controlled ‘Death Star’ self replicating “Kill all Life” antagonist that mined asteroids because it could not land on a planet and expect to lift off again. But hey, fantasy is fun and just may become practical some day. After all, men flying in the air? What practical use could that have?
Sorry, I don’t understand – what is the purpose of living in a deep gravity well like Mars, in 0.38 Earth gravity, where your and your children’s bodies will be forever deformed by lack of gravity, if you are mining asteroids off the surface of Mars? Why not build a 1G rotating space colony off of the surface of Mars using asteroids an Earth’s? be able to return to the 1 G of Earth? If you are on the surface of Mars, mine beneath the surface of Mars.
Sorry, I don’t understand – what is the purpose of living in a deep gravity well like Mars, in 0.38 Earth gravity, where your and your children’s bodies will be forever deformed by lack of gravity, if you are mining asteroids off the surface of Mars? Why not build a 1G rotating space colony off of the surface of Mars using asteroids an Earth’s? be able to return to the 1 G of Earth? If you are on the surface of Mars, mine beneath the surface of Mars.
We are going to have to solve the gravity issue or humans will not be able to live on moons and lower gravity planets.
This is only logical. If we had invested in building a REAL space station circling the Earth, say 10-15 miles in diameter, with factories, machine shops, research labs , etc., we could capture an asteroid in our local space and mine it off of the space station and then build space ships without uploading much from Earth.
Or if that is too difficult, then get that Moon base running where there will be plenty of materials to build form, given that the Moon is an old piece of the Earth.