Antimatter exists, gets produced in laboratories every day, and has even been transported by truck across a research campus, but you cannot buy it in any meaningful sense. No company sells it, no catalog lists it, and the quantities that humanity has managed to create over decades of particle physics research amount to barely enough atoms to heat a cup of coffee. The per-gram cost estimates that circulate online, often in the range of tens of trillions of dollars, reflect a real underlying truth: making antimatter demands enormous energy, and storing it is an engineering feat that only a handful of facilities on Earth can manage.
How Antimatter Gets Made
Antimatter does not come from some exotic mineral or distant star. It is manufactured, particle by particle, using particle accelerators. The basic process involves slamming high-energy protons into a dense metal target. When a proton hits the target with enough energy, the collision converts some of that kinetic energy into new particles, including antiprotons, following the principle that energy can become mass. At CERN, the world’s leading antimatter facility, a chain of accelerators pushes protons up to 26 GeV before smashing them into a target, producing bursts of antiprotons at around 3.5 GeV of momentum that are then captured and slowed down for experiments.1ScienceDirect (Physics Reports). The CERN antiproton collider programme: accelerators and accumulation rings
The lighter antimatter counterpart, the positron (the antielectron), can be produced more easily. Certain radioactive isotopes emit positrons naturally as they decay, and dedicated positron sources exist for collider projects around the world. These sources are considered critical bottlenecks for future lepton colliders because generating positrons in sufficient quantities and with the right beam qualities remains one of the hardest technical challenges in accelerator physics.2Journal of Instrumentation. Positron sources: from conventional to advanced accelerator concepts-based colliders
The important thing to understand is that both processes are absurdly inefficient. For every antiproton produced at CERN, the accelerator complex consumes vastly more energy than the antiproton carries. Billions of protons hit the target for each usable antiproton captured. Over the decades that CERN has operated its antimatter facilities, the total amount of antihydrogen produced adds up to a few tens of nanograms at most. That is not a rounding error in some industrial process. That is the entire output of the most sophisticated antimatter production infrastructure on Earth.
Why the Price Is Barely Calculable
Various estimates have pegged the cost of antimatter at somewhere between $25 billion and $100 trillion per gram, depending on what you count and which antimatter particle you are talking about. These figures are not prices in the usual sense. Nobody is selling antimatter at these rates. They are back-of-the-envelope calculations based on dividing the operating costs of particle accelerator facilities by the minuscule quantities of antimatter they produce.
The fundamental problem is thermodynamic. Creating a single antiproton requires converting energy into mass, but the conversion process at current facilities wastes the overwhelming majority of the input energy. The proton beam, the target interactions, the magnetic capture systems, the cooling rings, the cryogenics, and the vacuum infrastructure all consume electricity and engineering resources, and only a tiny fraction of that expenditure ends up stored in the mass-energy of antiprotons. If you tried to scale up production to make a full gram of antihydrogen using today’s technology, you would need more energy than some countries consume in a year, along with accelerator infrastructure that does not exist.
Positrons are cheaper to produce because they come from radioactive decay and from electron-positron pair creation at lower energies, but “cheaper” is relative. The positrons used in medical imaging, for example, are generated from short-lived isotopes in hospital cyclotrons, a process that costs thousands of dollars per dose but produces only trace quantities of antimatter in the form of unstable radiotracers. Nobody is accumulating those positrons for storage or resale.
The Storage Problem
Even if you could afford to produce a meaningful quantity of antimatter, you would face an even more daunting challenge: keeping it alive. Antimatter annihilates instantly on contact with ordinary matter, converting both particles entirely into energy. There is no bottle, no jar, no container made of atoms that can hold antimatter, because the container itself is made of the very thing antimatter destroys on contact.
The solution, for charged antiparticles like antiprotons and positrons, is to suspend them in a vacuum using electromagnetic fields. Devices called Penning traps use a combination of electric and magnetic fields to confine charged particles without any physical walls. This works, but it works for tiny numbers of particles, thousands or millions at most, in ultra-high vacuum and often at cryogenic temperatures.
Neutral antimatter is harder still. Antihydrogen, which consists of an antiproton orbited by a positron, carries no net charge and cannot be held in an electromagnetic trap designed for ions. The ALPHA experiment at CERN managed to confine cold antihydrogen atoms using a magnetic minimum trap, a setup that exploits the tiny magnetic moment of the atom to hold it in place with carefully shaped magnetic fields.3Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. The ALPHA antihydrogen trapping apparatus This was a breakthrough for fundamental physics, enabling the first measurements of antihydrogen’s properties, but the number of anti-atoms trapped at any given time is typically in the hundreds. We are not close to storing antimatter in bulk.
Antimatter You Already Use
There is one place where antimatter plays a routine, economically established role: medicine. Positron emission tomography, or PET, relies entirely on antimatter. A patient receives an injection of a radioactive tracer, most commonly a glucose analog labeled with fluorine-18. As the fluorine-18 atoms decay, each one emits a positron. That positron immediately encounters an ordinary electron in the surrounding tissue, and the two annihilate, producing a pair of gamma rays that fly off in opposite directions. Detectors arranged in a ring around the patient catch those gamma ray pairs and use the timing to reconstruct a three-dimensional image of where the tracer accumulated.4PubMed Central. Positron emission tomography (PET) imaging with (18)F-based radiotracers
PET is one of the most important tools in oncology, neurology, and cardiology. Fluorine-18 is preferred as a PET radionuclide because its half-life of about 110 minutes is long enough to synthesize the tracer and transport it to a patient, but short enough that radiation exposure stays manageable.5PubMed. Fluorine-18: A radionuclide with diverse range of radiochemistry and synthesis strategies for target based PET diagnosis The expansion of PET worldwide has been driven partly by the growing availability of compact medical cyclotrons that can produce fluorine-18 on site or nearby.6PubMed. Fluorine-18 radiopharmaceuticals beyond [18F]FDG for use in oncology and neurosciences
So in a very real sense, antimatter is bought and sold every day, just not in a form most people recognize. When a hospital purchases a dose of fluorine-18 FDG, it is purchasing a substance whose entire diagnostic value depends on the positrons it emits. The quantity of antimatter involved in a single PET scan is vanishingly small, on the order of billionths of a gram, but the clinical and economic infrastructure around it is massive. PET scans cost patients hundreds to thousands of dollars apiece, and the global market for PET radiopharmaceuticals runs into the billions. If someone asks whether antimatter has commercial value, the answer is yes, in exactly this form.
Antimatter in Nature
Earth is not entirely devoid of natural antimatter production. Thunderstorms generate what are called terrestrial gamma-ray flashes, bursts of high-energy photons produced when electrons are accelerated to extreme energies in the powerful electric fields at the tips of lightning leaders. These gamma rays are energetic enough to create electron-positron pairs when they interact with atoms in the atmosphere.7Nature. Imaging of 3 bright terrestrial gamma-ray flashes by the atmosphere-space interactions monitor and their parent thunderstorms The positrons created this way annihilate almost immediately, so they do not accumulate, but their existence means that thunderstorms are, briefly and locally, antimatter factories.
Cosmic rays also produce antimatter when they collide with atoms in the upper atmosphere or in interstellar space. Satellite experiments have detected small numbers of antiprotons and positrons in the cosmic ray flux. Researchers have looked for evidence of large-scale antimatter regions in the universe, clusters of anti-galaxies or anti-stars, but the available evidence strongly suggests that the observable universe is overwhelmingly composed of ordinary matter. The matter we see today is thought to be the remnant of a slight asymmetry in the early universe: roughly one extra particle of matter for every ten billion particle-antiparticle pairs, left over after nearly everything annihilated in the hot plasma after the Big Bang.8New Journal of Physics. Matter and antimatter in the universe Why that asymmetry exists is one of the deepest open questions in physics.
Antiproton Therapy and Other Research Frontiers
Beyond PET imaging, researchers have explored whether antiprotons themselves could be used as a cancer treatment. The idea is appealing in principle. When a beam of charged particles enters tissue, it deposits most of its energy at a specific depth, a feature already exploited in proton therapy. Antiprotons would do the same thing, but with a bonus: at the end of their range, they annihilate with a proton in the tissue, releasing extra energy right at the tumor site. An experiment at CERN irradiated living hamster cancer cells with 50 MeV antiprotons and compared the results to irradiation with protons and conventional gamma rays.9Nuclear Instruments and Methods in Physics Research Section B. Antiproton therapy – Section: The ACE experiment The results showed enhanced cell killing at the Bragg peak compared to protons, confirming the basic physics. But antiproton therapy faces the same problem as everything else involving antimatter: producing enough antiprotons for clinical use is currently nowhere near feasible. A single treatment session in proton therapy requires billions of protons per second. Scaling antiproton production to match that demand, given current technology, is not on any realistic near-term roadmap.
On the production side, laser-driven approaches represent a genuinely different path. Theoretical and simulation work has shown that when laser intensities exceed about 5 × 10²² watts per square centimeter, strong-field quantum processes kick in that can convert laser photons into electron-positron pairs far more efficiently than conventional methods. One proposed mechanism combines nonlinear Compton scattering with the Bethe-Heitler process to generate relativistic electron-positron jets more than a thousand times denser than previously achievable.10arXiv. A channel for very high density matter-antimatter pair-jet production by intense laser-pulses These techniques are still in the theoretical and early experimental phase, and reaching the required laser intensities is itself a major engineering challenge, but they hint at future production methods that could bypass the accelerator-target paradigm entirely.
Moving Antimatter From One Place to Another
For most of the history of antimatter research, every experiment had to be performed at the same facility where the antimatter was produced, because there was no way to move it. That changed in a striking way with BASE-STEP, a transportable Penning trap system developed for use at CERN. The device weighs between 850 and 900 kilograms and packs everything needed for autonomous antimatter transport into a single frame: a superconducting magnet, cryogenic cooling, precision voltage supplies, frequency generators, non-destructive particle detectors, and batteries for uninterruptible power.11Nature. Proton transport from the antimatter factory of CERN
In a 2025 demonstration, researchers used BASE-STEP to trap a cloud of protons (standing in for the eventual antiproton cargo), loaded the trap onto a truck, and drove it across CERN’s Meyrin campus. The system operated autonomously without external power for four hours and relocated the trapped particles without losing any of them.12PubMed Central. Proton transport from the antimatter factory of CERN The immediate goal is to deliver antiprotons from CERN’s Antimatter Factory to experiments elsewhere, potentially at other institutions, decoupling antimatter research from the one facility that produces antiprotons.
This does not mean antimatter delivery is around the corner for commercial or industrial customers. The quantities involved are still measured in thousands or millions of particles, far below what any bulk application would require. But it demonstrates that the containment and transport technology is maturing. The engineering problems, keeping the vacuum, the cryogenics, and the electromagnetic fields stable during a road trip, are being solved one by one. For now, the “customers” are other physics experiments. The concept of a distributed antimatter supply chain, where one production facility serves multiple users, is no longer purely hypothetical.
The Space Propulsion Dream
Antimatter propulsion has been a staple of science fiction for decades, and the physics behind it is genuinely tantalizing. When a proton and an antiproton annihilate, they convert their entire combined mass into energy, mostly in the form of pions that subsequently decay into lighter particles, muons, neutrinos, and gamma rays. No chemical reaction comes close to this energy density. A gram of antimatter annihilating with a gram of matter would release roughly the energy of a small nuclear bomb.
Engineers have sketched out conceptual designs for antiproton-catalyzed propulsion systems, where tiny quantities of antimatter would ignite fusion reactions or heat a propellant to extreme temperatures for thrust. The appeal is obvious: a spacecraft carrying milligrams of antimatter could, in theory, achieve mission profiles that would take tonnes of chemical fuel. Mars transit times could be measured in weeks instead of months.
The practical barriers, though, are the same ones that make buying antimatter impossible today, scaled up to an even more absurd degree. A crewed Mars mission using antimatter propulsion would need milligrams to grams of antiprotons, depending on the design. Current global production is on the order of nanograms per year. You would also need to store it aboard a spacecraft, where vibrations, radiation, and power interruptions could all cause the containment to fail, with catastrophic consequences. No one in the aerospace engineering community treats antimatter propulsion as a near-term possibility. It sits in the category of technologies that are physically sound but practically inaccessible given the current state of production and storage.
Regulatory and Safety Realities
If someone did manage to produce antimatter in significant quantities, they would face a regulatory landscape that is not specifically designed for antimatter but would apply nonetheless. Particle accelerator facilities already operate under detailed radiation protection guidelines established by bodies like the National Council on Radiation Protection and Measurements, whose standards cover facilities ranging from medical cyclotrons to high-energy research accelerators.13Radiation Protection Dosimetry. NCRP Report no. 144—Radiation protection for particle accelerator facilities Antimatter annihilation produces gamma rays and other ionizing radiation, so any facility handling it in quantity would fall squarely under existing radiation safety regulations.
There is no specific law banning private ownership of antimatter, largely because the question has never needed answering. The quantities that exist are so small and so ephemeral that regulatory frameworks have not had to address antimatter as a controlled substance. If production ever scaled up, it is easy to imagine antimatter falling under export controls, hazardous materials regulations, and possibly nuclear or radiological security frameworks, given that even microgram quantities would carry destructive potential. For now, the regulatory vacuum is a reflection of the practical vacuum: there is nothing to regulate because there is nothing to sell.
Positron Annihilation as an Industrial Tool
Outside of medicine and fundamental physics, positrons have found a niche as a materials characterization tool. Positron annihilation spectroscopy works by injecting positrons into a solid material and measuring how long each positron survives before it encounters an electron and annihilates. In a perfect crystal lattice, positrons annihilate quickly because electrons are everywhere. In a material with defects, vacancies, or voids, positrons get trapped in the empty spaces and live slightly longer before finding an electron to annihilate with. By measuring the distribution of positron lifetimes, researchers can map out the types and concentrations of defects inside a material without cutting it open.
This technique has been used to study radiation damage in materials destined for nuclear reactors. In one study on tungsten, a candidate material for fusion reactor walls, positron annihilation lifetime spectroscopy revealed three distinct populations of defects after proton irradiation: annihilations in the intact lattice at around 100 to 120 picoseconds, annihilations in small vacancy clusters at roughly 190 to 330 picoseconds, and annihilations in larger vacancy clusters at about 500 picoseconds.14Journal of Nuclear Materials. Annealing of radiation-induced defects in tungsten: Positron annihilation spectroscopy study Tracking how those populations shifted after heat treatment gave a detailed picture of how the material heals itself, information that is critical for designing components that will survive years of bombardment inside a fusion power plant. The positron sources used for this work are modest, typically small radioactive sources rather than accelerator beams, and the antimatter quantities are infinitesimal. But the technique exploits a unique property of antimatter, its guaranteed annihilation with matter, to extract information that no other method can easily provide.