Asteroid mining is the theoretical extraction of raw materials from near-Earth objects and belt asteroids for use in space or on Earth. In commercial concepts, target resources split into two categories: volatile compounds like water ice that can be processed into rocket propellant, and dense deposits of iron, nickel, and platinum-group metals (PGM).
As of September 2026, no commercial entity has extracted or returned a single gram of asteroid material. The physical record rests on scientific sample-return flights funded by national space agencies, alongside early private test flights that have encountered severe communication and payload failures in deep space.
Our space mining explainer covers the wider picture: target resources on asteroids and the Moon, the companies, the law, and feasibility.
What Asteroids Contain Across Three Main Classes
The National Aeronautics and Space Administration (NASA) groups asteroids into three broad composition classes.
C-type, or chondrite, asteroids represent the most common variety. NASA data indicates that about 75 percent of known asteroids belong to this carbonaceous class. These dark bodies consist of clay and silicate rocks, containing organic carbon compounds and trapped water ice. Because water can be electrolyzed into liquid hydrogen and oxygen propellant, carbonaceous near-Earth objects serve as the primary focus for companies planning orbital refueling depots.
S-type asteroids are stony bodies composed predominantly of silicate minerals, iron, and nickel. They are the second most common class.
M-type asteroids are metallic objects composed primarily of nickel and iron, with suspected concentrations of platinum-group metals. The Planetary Society notes M-types may be the stripped cores of ancient planetesimals. These metallic bodies drive speculative commercial interest in returning industrial ores to Earth.
The majority of these objects reside in the main asteroid belt between Mars and Jupiter. NASA estimates that the main belt contains between 1.1 million and 1.9 million asteroids larger than 1 kilometer in diameter, alongside millions of smaller bodies. These range in scale from Vesta, measuring approximately 329 miles across, down to small boulders under 33 feet in diameter.
| Asteroid Class | Primary Composition | Relative Abundance | Commercial Target Resource |
|---|---|---|---|
| C-type (Chondrite) | Clay, silicate rocks, organic carbon, water ice | ~75% of known asteroids | Water for in-space rocket propellant |
| S-type (Stony) | Silicate materials, nickel-iron | Second most common | Not stated in the sources cited |
| M-type (Metallic) | Nickel-iron, suspected platinum-group metals | Not stated in the sources cited | Industrial metals, precious metals |
How Asteroid Mining Would Work in Concept
Every proposed asteroid mining architecture follows an operational sequence spanning remote prospecting, orbital rendezvous, physical extraction, and refining. Commercial firms have published architectural roadmaps, but no end-to-end industrial system exists today.
Prospecting starts with spectral classification from a distance, which cannot settle what a body is actually made of: Odin’s target 2022 OB5 is listed as an M-type with a question mark because its spectroscopic composition is not yet known. AstroForge’s DeepSpace-2 is meant to close that gap by flying to one of about 28 candidate asteroids and imaging it up close, per Aerospace America.
Rendezvous presents the next mechanical hurdle. Unlike landing on the Moon, an asteroid provides microgravity conditions that make traditional surface operations difficult. Two published approaches exist. AstroForge’s June 2026 essay says DeepSpace-2 will rendezvous with a metal asteroid and attempt to land on its surface. Startup TransAstra has developed an inflatable Capture Bag that envelops a small object whole. The company secured a 2.5 million dollar award from NASA’s Civil Commercial Research and Products Program in September 2025 to scale its bag from 1 meter to 10 meters in diameter, conducting vacuum trials on the International Space Station.
Processing concepts split along the two resources. Karman+ plans to extract water from asteroid regolith and split it into hydrogen and oxygen. AstroForge’s Brokkr-1 payload was built to vaporize an asteroid-like material and sort it into its elemental components; that step has not yet run in space. For propulsion systems operating deep beyond low Earth orbit, our guide to ion propulsion details how electric thrusters provide the high efficiency needed to manage deep-space maneuvers on low propellant budgets.
Material Returned by Scientific Missions to Date
The physical catalog of recovered asteroid material belongs entirely to government space agencies. Those missions prove that automated proximity operations and reentry capsules work, at budgets AstroForge’s June 2026 essay puts at over 1 billion dollars each.
The Japan Aerospace Exploration Agency operated the pioneer missions in this field. JAXA’s Hayabusa2 launched on December 3, 2014, and arrived at the carbonaceous near-Earth asteroid Ryugu on June 27, 2018. The spacecraft collected its sample and returned its reentry capsule to the Woomera Range Complex in South Australia on December 6, 2020. The JAXA sample curation team measured the total returned sample mass at 5.424 grams. Physical analysis revealed high porosity, structural brittleness, and spectroscopic signatures showing hydroxyl groups and carbon-hydrogen bonds, confirming the presence of water-bearing minerals and organic compounds.
NASA executed a larger recovery effort with its Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) mission. The spacecraft launched on September 8, 2016, and made contact with the carbonaceous asteroid Bennu on October 20, 2020.
The OSIRIS-REx sample capsule touched down at the Department of Defense Utah Test and Training Range on September 24, 2023. A peer-reviewed analysis in Nature Geoscience confirmed that the mission delivered 121.6 grams of pristine material. On January 29, 2025, the NASA science team announced that laboratory testing of the Bennu samples identified 14 of the 20 amino acids used by terrestrial life, all five nucleobases for DNA and RNA, abundant ammonia, and 11 distinct evaporite minerals left behind by ancient brines.
These missions demonstrated navigation and sample recovery across multi-year trajectories. They also confirmed the high cost of scientific spaceflight. In a June 2026 essay, commercial startup AstroForge noted that OSIRIS-REx, Hayabusa, and Hayabusa2 each required over 1 billion dollars in total mission costs, and that humanity has returned material from only three small bodies.
Commercial Flight Trials and Hardware Tests
Private startups are attempting to replace billion-dollar agency programs with low-cost commercial spacecraft. The leading venture lost contact with both of its first two spacecraft.
AstroForge is a venture-backed startup founded to extract platinum-group metals from near-Earth metallic asteroids. The company launched its first test payload, Brokkr-1, on April 15, 2023, aboard the SpaceX Transporter-7 rideshare flight. The 6U CubeSat carried an onboard refinery system designed to vaporize an asteroid-like simulant in low Earth orbit. Ground controllers never achieved the radio link needed to command the refinery payload, and the company recorded its final contact with the satellite on May 16, 2024.
AstroForge launched its second spacecraft, Odin, on February 26, 2025, as a secondary rideshare on the Intuitive Machines IM-2 lunar lander flight. The vehicle cost approximately 3.5 million dollars and was intended to fly past 2022 OB5, a near-Earth object between 3 and 13 meters across whose M-type classification remains unverified. Ground tracking teams lost communication approximately 36 hours after separation due to ground-station pointing errors, polarization mismatches, and an unconfirmed solar-panel deployment fault. The craft drifted uncontacted into deep space roughly 270,000 miles from Earth.
AstroForge completed assembly of its third vehicle, DeepSpace-2, in June 2026. DeepSpace-2 is a 200-kilogram vehicle equipped with 2 kilowatts of solar power, 60 kilograms of xenon propellant for Hall-effect thrusters, and optical tracking cameras. AstroForge has scheduled the probe to launch on the Intuitive Machines IM-3 mission in late 2026, targeting a rendezvous and surface landing on a metallic near-Earth asteroid roughly 20 million kilometers away. Intuitive Machines, whose IM-2 carried Odin and whose IM-3 is slated to carry DeepSpace-2, is covered in our guide to researching Intuitive Machines stock.
In Colorado, startup Karman+ is developing spacecraft to extract water from asteroid regolith to create in-space propellant depots. The company announced a 20 million dollar seed funding round in February 2025 led by Plural and Hummingbird, aiming for a demonstration flight in 2027 with a target budget below 10 million dollars per vehicle.
AstroForge’s full mission record is in our AstroForge explainer, and every active company is compared in our asteroid mining companies table.
Asteroid Mining Economics and the Psyche Valuation Myth
Public interest in asteroid resources is distorted by headline estimates asserting that individual asteroids hold tens of quintillions of dollars in mineral wealth. The most common reference point is the asteroid 16 Psyche, a massive M-type body measuring 173 miles across at its widest point.
The 10 quintillion dollar valuation figure originated as a calculation by planetary scientist Lindy Elkins-Tanton, the principal investigator for NASA’s Psyche science mission. In an interview with CBS News during the spacecraft’s launch, Elkins-Tanton repudiated the figure as a headline device that is fundamentally false in application. Newsweek notes the figure assumes the asteroid’s metal were transported back to Earth and somehow mined, which current technology cannot do.
Real commodities markets do not support static multi-trillion-dollar valuations:
- Market absorption: If millions of tons of platinum or nickel were returned to Earth, Newsweek notes the sudden influx would likely cause the metals’ market prices to plummet, cutting the asteroid’s effective value. A July 2026 working paper on the arXiv repository by Nachtrieb and Smith notes that the market price of platinum-group metals would only drop toward asteroid mining costs after the entire supply infrastructure moved off-world.
- Transportation physics: No current technology can bring Psyche’s metal home; Elkins-Tanton asked in 2017 what anyone would even do with a big metal piece dragged back here.
- Science vs extraction: NASA’s Psyche mission, which cost 1.2 billion dollars, is a scientific study of planetary cores that carries zero mining equipment. The spacecraft launched in October 2023 and begins its prime mission at the asteroid in August 2029.
Commercial market research firms have put a bounded, if wide-ranging, figure on the asteroid mining industry itself. Spherical Insights recorded 1.82 billion dollars in 2023, targeting 8.40 billion dollars by 2033, while Research and Markets projected 2.05 billion dollars in 2025 reaching 5.42 billion dollars by 2030. Across 2024 estimates, IMARC Group calculated 2.27 billion dollars rising to 9.29 billion dollars by 2033, whereas SkyQuest projected 3.21 billion dollars expanding to 21.64 billion dollars by 2033.
These forecasts model projected capital investments, mission manifests, and adjacent aerospace analogues instead of realized sales receipts. Because no commercial operator has yet extracted or sold space resources, the complete absence of operational revenue accounts for the wide spread between individual research firm targets. While these industry forecasts remain unverified by actual transactions, they outline a bounded market size that contrasts with theoretical multi-quintillion-dollar asteroid valuations.
At OrbitalIntel, we read company roadmaps against what has actually flown. On that reading, the nearer-term case is water: propellant made in space avoids the cost of launching fluids out of Earth’s gravity well, and a buyer already exists.
Propellant suppliers already publish baseline pricing for this market. In August 2022, satellite servicing firm Orbit Fab set an in-space hydrazine delivery price of 20 million dollars for up to 100 kilograms of fuel in geostationary orbit. An asteroid mining platform that can refine water into hydrogen and oxygen propellant in deep space could theoretically sell fuel to space tugs at competitive margins. Readers evaluating speculative claims in early space ventures can review our space economy investing guide for how to read market-size projections without overreacting.
Legal Frameworks Governing Space Resource Extraction
The legal status of asteroid resources operates under a balance between Cold War international treaties and recent national statutes designed to encourage commercial spaceflight.
The foundation of international space law is the 1967 Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, commonly known as the Outer Space Treaty. Article II of the treaty explicitly bans national appropriation:
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.
Article VI adds that non-governmental entities require authorization and ongoing supervision by the state party responsible for their activities.
The United States settled the question for domestic operators by passing the Commercial Space Launch Competitiveness Act of 2015, codified as Public Law 114-90. Title IV of the act, titled the Space Resource Exploration and Utilization Act, provides explicit ownership rights:
A United States citizen engaged in commercial recovery of an asteroid resource or a space resource under this chapter shall be entitled to any asteroid resource or space resource obtained, including to possess, own, transport, use, and sell the asteroid resource or space resource obtained in accordance with applicable law.
Section 403 of the statute clarifies that the United States does not assert sovereignty or exclusive jurisdiction over any celestial body. Luxembourg established an equivalent European framework through its Law of July 20th 2017 on the Exploration and Use of Space Resources. Article 1 states directly that space resources are capable of being owned, while Article 2 requires private operators to secure a written operational authorization from the government minister overseeing space activities.
To establish international precedent under the Outer Space Treaty, NASA executed four token contracts in December 2020 totaling 25,001 dollars to purchase small collections of lunar regolith gathered by commercial lunar landers. By transferring ownership of collected space soil on the surface of another world, NASA demonstrated that governments could legally purchase extracted celestial resources from private companies without asserting national sovereignty over the underlying territory.
Projected Timelines for Asteroid Mining Milestones
Commercial asteroid ventures operate against ambitious self-imposed schedules that frequently experience launch delays and technical setbacks. The operational development of asteroid mining separates into distinct test windows:
AstroForge targets late 2026 for its DeepSpace-2 probe, which aims to complete the first commercial rendezvous with an M-type asteroid. AstroForge says the spacecraft will rendezvous with a metal asteroid and attempt to land on its surface; Aerospace America puts the transit at three to nine months.
Karman+ is aiming for its first launch in 2027 with a mission budget target of 10 million dollars or less.
TransAstra’s roadmap targets the capture and relocation of a 100-ton near-Earth asteroid before the end of the decade. Developed through its collaborative New Moon architecture study with Purdue University, the University of Central Florida, and the Jet Propulsion Laboratory, the company says a first capture mission could launch this decade with rendezvous in 2028 or 2029.
Until an automated commercial vehicle extracts raw material, processes it in deep space, and delivers it to a paying customer, every business projection remains theoretical. Readers seeking to track commercial orbital manufacturing ventures that are already flying operational test capsules should evaluate Varda Space Industries’ publicly traded status and commercial capsule recoveries. The next dated asteroid mining milestone to watch is DeepSpace-2’s fourth-quarter 2026 launch window, which AstroForge tracks on its DeepSpace-2 page.
For the Moon rather than asteroids, see what moon mining would actually extract.