Gravity has always set the rules.
Now materials can break them.

The Materials International Space Station Experiment (MISSE) exposes thousands of material samples — polymers, coatings, composites, and alloys — to the unfiltered conditions of low Earth orbit: extreme thermal cycling, atomic oxygen, radiation, and vacuum. With no atmosphere to buffer the environment, researchers can isolate exactly how a material degrades or improves, feeding data back into the design of tougher superalloys, coatings, and casting processes used on Earth.

Redwire's Ceramic Manufacturing Module used stereolithography and pre-ceramic resin to 3D print a single-piece turbine blisk aboard the ISS — the first ceramic part manufactured in space. Free of the sedimentation and composition gradients that limit strength in Earth-cast ceramics, the microgravity-built part points toward turbine components with higher strength and lower residual stress than anything cast on the ground, developed with HRL Laboratories and Sierra Turbines.

In January 2024, an Airbus-led team installed the first metal 3D printer aboard the ISS's Columbus module. The machine deposited a small stainless-steel curve in orbit, marking the first metal part ever manufactured in space — a proof point for eventually printing tools, spare parts, and structural components on demand, without relying on resupply missions from Earth.

Between February and March 2024, Flawless Photonics drew more than 11.9 kilometers of ZBLAN optical fiber aboard the ISS across eight separate runs, each exceeding 700 meters — nearly 45 times the previous record of roughly 25 meters. Free of the gravity-driven convection that causes microcrystallization on Earth, ZBLAN fiber pulled in orbit could theoretically carry signal with far less loss than conventional silica fiber, a difference commercial-length production runs are now starting to prove out.

Space Forge's ForgeStar-1 satellite launched in June 2025 as the first free-flying platform built specifically for in-space material production. In December 2025, it fired its onboard furnace for the first time, generating plasma at roughly 1,000°C — a critical step toward growing purer semiconductor crystals in orbit before returning them to Earth through the company's ablative heat shield, Pridwen.

Varda Space Industries and United Semiconductors signed a multi-flight agreement to grow semiconductor materials aboard Varda's autonomous, reentry-capable capsules. On Earth, gravity-driven convection in molten silicon introduces defects and impurity striations; producing silicon carbide and other wafers in microgravity can improve crystal uniformity, yield, and device performance beyond what's achievable in ground-based furnaces.

Redwire's Archinaut program (also flown as OSAM-2) combines additive manufacturing with robotic assembly to build structures far larger than the spacecraft that makes them — the goal is a washing-machine-sized unit producing football-field-scale trusses, booms, and reflectors on orbit. Manufacturing free of gravity loading and launch-shroud size limits opens the door to structures that could never survive being built and launched fully assembled from Earth.

In January 2026, Aegis Aerospace and United Semiconductors launched the Advanced Materials Manufacturing Platform (AMMP), the first dedicated in-space facility built to demonstrate advanced materials production at commercial scale rather than as a one-off experiment. Backed by United Semiconductors' expertise supplying the U.S. Department of Defense, the platform is a step toward a repeatable, defense-relevant domestic supply chain for orbit-grown materials.

Sierra Space is developing its LIFE habitat as a pathfinder for commercial space stations purpose-built as "factories of the future" — platforms designed from the outset for repeatable industrial and biotech production rather than short-duration experiments. As the ISS approaches retirement, platforms like LIFE aim to give materials and manufacturing programs a permanent, scalable home in orbit.

CSIRO's printed, flexible perovskite solar cells launched aboard Space Machines Company's Optimus-1 satellite, testing next-generation photovoltaics engineered for a far higher power-to-weight ratio than traditional silicon cells. Perovskites are compatible with low-temperature, solution-based, and vacuum-deposition manufacturing methods that could eventually be adapted for production in orbit, pointing toward lighter, more efficient power systems for satellites and future space infrastructure.