Lux Aeterna emerged from stealth and announced its $4 million pre-seed funding round. The raise was led by Space Capital with participation from Dynamo Ventures, Mission One Capital, Alumni Ventures, Service Provider Capital, and strategic deep tech angels, including the co-founders of Dive Technologies (acquired by Anduril).

Lux Aeterna is developing a fully reusable satellite bus, engineered for high reliability and designed to meet emerging demands from the U.S. Department of Defense for responsive space capabilities. The company is building a future in which satellites aren’t single-use assets but dependable infrastructure that can be launched, returned, and redeployed like reusable rockets.

The company plans to embark on its pathfinder demonstration in early 2027, when it will launch

its first spacecraft, Delphi, via Exolaunch on a rideshare mission with SpaceX.Delphi will demonstrate an end-to-end mission by hosting an onboard payload, conducting on-orbit tests, then re-entering Earth’s atmosphere to be recovered and refurbished for another flight, making it the first satellite ever to fly twice.

Unlike traditional satellite buses that burn up after each mission, Lux Aeterna’s platform is fully reusable. This breakthrough not only lowers costs but also sets a new standard for resilience and sustainability in orbital operations. As part of this shift, Lux Aeterna is rolling out multiple business models to give customers a range of ways to access and operate satellites. Whether a mission lasts six months or five years, the cost can align with time on station, unlocking new operational and economic agility.

Lux Aeterna’s approach is grounded in the recognition that market demand for downmass and reusable satellite infrastructure is not just emerging, but here today. The company is actively collaborating with other industry leaders to co-develop a market-focused framework that prioritizes customer flexibility, mission diversity, and operational choice in this expanding sector.

“We’re taking the high-risk, high-cost nature out of space missions and replacing it with reliability, flexibility, and reusability,” said Brian Taylor, Founder and CEO of Lux Aeterna, a former engineering leader at SpaceX, Amazon Project Kuiper, and Loft Orbital. “This funding is the first milestone in our mission to industrialize space through reusable infrastructure. While the satellite industry has evolved rapidly, its core infrastructure is still designed to be disposable. Lux Aeterna is changing that fundamental approach from the ground up.”

“We backed Lux Aeterna because this team has been at the leading edge of satellite innovation for years—building some of the most advanced spacecraft at the most ambitious companies,” said Justus Kilian, Partner at Space Capital. “That experience gave them a rare vantage point to rethink how satellites are designed, deployed, and reused. They’re not just iterating—they’re stepping boldly into what’s next. With the DoD actively seeking more dynamic and recoverable space platforms, this capability is urgently needed.”