Manufacturing in a microgravity environment is nearing a transition from scientific experiments to an emerging commercial industry, with companies testing the production of drugs, semiconductors, optical fibers and advanced materials in low Earth orbit. Private companies are driving the trend, benefiting from lower launch costs, the development of commercial space stations and preparations for the end of the International Space Station era, while expansion remains contingent on proving economic viability and addressing technical and regulatory challenges.
Microgravity opens new production pathways
At an altitude of about 400 kilometers, private companies are betting that microgravity will enable the manufacture of products with properties that are difficult to achieve on Earth. Gravity constrains some industrial processes through convection, buoyancy and sedimentation, whereas spacecraft in low Earth orbit are in continuous free fall, reducing the effects of weight, sedimentation and convection and allowing crystals to grow more uniformly and with fewer defects at the atomic level.
This could open the way to producing semiconductor materials with improved electrical and optical properties for use in communications, computing and high-power electronics, as well as developing drug formulations and high-value materials in the orbital environment.
Varda Space Industries has demonstrated the possibility of processing drug compounds in orbit and then returning them to Earth after producing a specific crystalline form of ritonavir, a substance used to treat HIV. In 2026, the company signed a multi-flight development agreement with United Semiconductors to produce semiconductors in orbit for use on Earth.
In May 2026, Varda Space Industries also signed a research cooperation agreement with United Therapeutics to develop treatments for a rare lung disease. The company had raised about 329 million dollars by 2025.
British company Space Forge, for its part, succeeded in generating plasma inside an independent satellite, in an experimental step toward the crystal-growth processes used in semiconductor manufacturing. In February 2026, the UK Space Agency announced 300,000 pounds sterling, or about 380,000 dollars, in funding for a company study examining the production of semiconductor crystals in orbit and their potential uses in communications, data centers, electric-vehicle charging and quantum computing.
Experiments aboard the International Space Station had previously supported the viability of producing ZBLAN fibers, advanced optical fibers made from fluoride glass. On Earth, the material suffers from uneven crystallization because of gravity, whereas it can be produced in space at a quality that, according to the source material, enables it to carry more than 10 times the data transmitted by conventional silica fibers.
Commercial platforms and a high-cost economic model
Other companies are developing the infrastructure needed for the industry. Redwire has established a space laboratory for drug crystallization and entered partnerships with pharmaceutical companies to develop high-value protein crystals and drug molecules. Axiom Space is also building a future station that will include a research and manufacturing module, while Orbital Reef and Starlab are being developed as commercial platforms that could host research and production facilities.
Estimates by the World Economic Forum indicate that the global space economy could grow from about 630 billion dollars in 2023 to 1.8 trillion dollars by 2035. Orbital manufacturing is an emerging sector within this economy, driven by falling costs of access to space and the expanding use of its technologies.
The economic model for orbital factories is based on producing high-value goods that justify the costs of launch, manufacturing and return to Earth. This differs from the traditional satellite economy, as the value here is tied to the product manufactured in orbit, not to the service the satellite provides from space.
Reusable rockets have helped reduce the cost of reaching orbit compared with the space shuttle era, while the industry is betting that heavy reusable vehicles, led by Starship, will reduce that cost even further in the future.
International competition and the varying roles of states
The United States is leading a major part of this activity by combining NASA programs with venture-capital funding and industrial companies. NASA’s In-Space Production Applications program seeks to develop space-manufacturing technologies and turn research into scalable commercial applications, while strengthening the role of non-government demand in the low Earth orbit economy.
In Europe, companies are drawing on their accumulated experience from participation in the International Space Station, with companies including Airbus and Thales Alenia Space involved in developing commercial-station infrastructure. China, meanwhile, is using the Tiangong space station as a state-controlled national platform under its plan to become a space superpower by 2045.
The United Kingdom is supporting studies on the manufacture of drugs, semiconductors and optical fibers in orbit, and has worked with regulators in the pharmaceutical and civil aviation sectors to prepare a regulatory pathway covering licenses, guidance and regulatory sandboxes.
Emerging countries do not necessarily need to build a national space station to enter the sector. They can invest in ground-based centers for testing payloads, participate in establishing intellectual-property rules, provide regulatory frameworks that attract space startups and build strategic partnerships.
Technical and legal barriers to large-scale production
Despite the progress made, orbital factories still face technical challenges, including developing autonomous automation, managing heat and power, ensuring the safety of return to Earth, and limiting the effects of vibrations and the risks posed by space debris. Initial costs also remain high, and many applications are still at the proof-of-concept stage.
The transition to large-scale production depends on proving that the added value of the products exceeds the costs of manufacturing them in orbit and returning them to Earth. NASA says that building a successful commercial economy in orbit requires addressing market barriers and access to customers, as well as developing profitable business models and securing investment and financing.
Unresolved legal questions are also emerging over ownership of patents for processes carried out in orbit and how drug-safety standards should be applied to products processed outside Earth. As a result, the transformation of orbital manufacturing into a large-scale industry remains contingent on reducing costs, achieving repeatable and scalable production, and establishing clear regulatory frameworks. If the sector overcomes these obstacles, microgravity could become an economically significant resource in the supply chains for drugs, advanced materials and semiconductors.
