14 Surprising Facts About Private Space Companies Competing With NASA

5. Relativity Space's 3D Printing Innovation

Relativity Space has pioneered an entirely new approach to rocket manufacturing by developing the world's largest 3D metal printers capable of producing entire rocket structures, representing a fundamental shift from traditional aerospace manufacturing that relies on thousands of individual parts assembled by hand to a streamlined process that can print a complete rocket with just 100 parts. The company's revolutionary Stargate 3D printers, standing over 20 feet tall, can print rocket components from raw metal powder in a matter of days, compared to traditional manufacturing processes that can take months to machine and assemble equivalent structures. This additive manufacturing approach offers unprecedented design flexibility, allowing engineers to create complex internal geometries and integrated systems that would be impossible to manufacture using conventional methods, while also reducing material waste and production time by orders of magnitude. Relativity's Terran 1 rocket, which is 85% 3D printed by mass, represents the most advanced application of additive manufacturing in aerospace history and has attracted significant attention from NASA for its potential to enable rapid, on-demand manufacturing of spacecraft and equipment for future Mars missions. The implications of this technology extend far beyond Earth-based manufacturing, as 3D printing could enable astronauts to manufacture tools, spare parts, and even entire spacecraft using raw materials found on other planets, making long-duration space missions and permanent space settlements much more feasible. The company's approach has forced traditional aerospace manufacturers to reconsider their production methods, with many now investing heavily in their own additive manufacturing capabilities to remain competitive. Relativity's success in demonstrating that rockets can be manufactured using radically different methods has opened the door for even more innovative approaches to space hardware production, potentially leading to a future where spacecraft can be manufactured in space using asteroid materials.