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Orbital Matter 3D printed the first rigid beam in the vacuum of space
Orbital Matter says its Replicator-2 satellite has 3D-printed a rigid beam in the vacuum of space, a first for a free-flying spacecraft in orbit. The demonstration could help spacecraft build large power and heat-dissipation structures in orbit, avoiding the size limits imposed by rocket fairings.
Launched on a SpaceX rideshare mission this summer, Replicator-2 carried four printers that extrude resin and cure it with ultraviolet light. One printer failed, but a successfully printed boom deployed a flexible solar array; the beam measured half a metre, while the company says 100-metre booms may be feasible. Orbital Matter plans a larger demonstration in 2028, aiming to deploy a 5-kilowatt solar array, with deployments above 100 kilowatts per wing targeted by 2030.
In short
- Orbital Matter printed a rigid beam in orbit.
- Its half-metre boom helped deploy a solar array.
- A larger printer demonstration is planned for 2028.
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The case for
In-orbit printing could let spacecraft assemble large power and heat-dissipation structures that cannot fit within rocket fairings, potentially reducing launch constraints and enabling more capable missions. The successful half-metre beam and solar-array deployment offer an early proof of concept, while further demonstrations could show whether the approach scales reliably.
The case against
A successful small demonstration does not yet establish that long, load-bearing structures can be printed and deployed reliably at mission scale; one of the four printers also failed. Until larger tests validate performance, durability and practical benefits, ambitious targets for 100-metre booms and high-power arrays remain company projections, and the technology may add complexity and risk to spacecraft.
Explained simply
Satellites and other spacecraft are usually built on Earth and folded up to fit inside a rocket’s fairing, the protective casing around its cargo. That limits the size of structures such as solar arrays, which generate electricity, and radiators, which release heat.
Orbital Matter is a company developing ways to make structures in space. Its Replicator-2 satellite carried printers that extrude resin and harden it with ultraviolet light; one printed a rigid beam that helped deploy a flexible solar array. The demonstration is part of a broader effort to build spacecraft structures in orbit.
If the approach can be scaled, spacecraft could carry compact printing equipment and make larger structures after launch. This could expand the size of power-generating and heat-dissipating systems, though the company’s plans for larger demonstrations remain future targets.