Orbital Matter 3D printed the first rigid beam in the vacuum of space

In-orbit 3D printing of structural components is now proven and scalable, reducing the need to fold large structures for launch.

Orbital Matter, a German startup, successfully 3D printed a half-meter rigid beam in the vacuum of space using its Replicator-2 satellite. This marks the first time such a feat has been achieved on a free-flying spacecraft, moving beyond previous in-orbit 3D printing confined to the International Space Station's pressurized environment. The company utilized four onboard 3D printers that extrude and cure a custom plastic resin. The printed beam was intended to deploy a solar array, and despite an anomaly affecting one printer, the successful deployment of the array with the printed boom serves as a key proof of concept. Orbital Matter, which raised a $3 million seed round, plans a larger demonstration mission in 2028 with a higher power output goal.

This achievement fundamentally changes the paradigm for constructing large structures in space. By enabling in-orbit manufacturing, Orbital Matter's technology bypasses the significant engineering challenges associated with folding and deploying massive components like solar arrays or antennas. It signals a future where spacecraft can be built to mission-specific sizes and complexity directly in orbit, rather than being constrained by launch vehicle fairings.

The success of the Replicator-2 mission implies a direct impact on satellite design and capabilities, potentially leading to more powerful and efficient spacecraft. Companies involved in satellite construction, like Thales Alenia, are already exploring integrations, suggesting a near-term shift in how large orbital systems are conceived and executed. Future missions will likely focus on increasing the scale and complexity of these printed structures, pushing the boundaries of space-based manufacturing.