In recent years, the emergence of reusable rockets has significantly transformed the space sector, and now, a new startup led by a SpaceX veteran aims to bring similar innovation to satellites. Brian Taylor, who previously contributed to the development of satellites for networks such as SpaceX's Starlink and Amazon's Leo, launched Lux Aeterna in December 2024. The company's goal is to create satellite structures equipped with heat shields, enabling them to return to Earth with their payloads intact.
Lux Aeterna recently announced a successful $10 million seed funding round, led by Konvoy, with contributions from various investors including Decisive Point and Space Capital. This funding will facilitate the design and construction of the Delphi spacecraft, which is set to be launched aboard a SpaceX rocket in the first quarter of 2027. This mission will allow Lux Aeterna to demonstrate its technology by testing hosted payloads that will return to Earth at Australia's Koonibba Test Range, in collaboration with Southern Launch.
Returning payloads from space involves entering Earth's atmosphere at high velocities, which generates extreme heat. To survive this journey, spacecraft require protective materials, often increasing their weight and, consequently, the cost of launching them into orbit. This has traditionally limited reentry capabilities to human-carrying vehicles, such as the Space Shuttle or SpaceX's Dragon spacecraft.
Other startups, like Varda Space and Inversion, are also addressing this challenge on a smaller scale, developing reentry capsules for experiments and sample returns. Varda has successfully conducted five missions, while Inversion plans to launch its Arc vehicle this year.
A dependable method for returning payloads from space is essential for various futuristic business models, including testing materials in orbit, manufacturing pharmaceuticals in microgravity, and extracting resources from asteroids. The U.S. military has expressed interest in utilizing this technology for logistics support and testing components for advanced weaponry.
However, Lux Aeterna envisions an even broader application: making communications and Earth observation satellites reusable. Currently, satellites typically have a lifespan of five to ten years due to failures or obsolescence, after which they are either destroyed or moved to less active orbits.
"Our ambitions extend beyond simple reentry," Taylor stated, highlighting the potential for a dynamically upgradeable satellite model. He explained that if a payload needs technological updates, rather than launching new satellites, they could be returned to Earth for upgrades.
While this vision is promising, economic viability remains a crucial factor. The benefits derived from new payloads must outweigh the costs of building, launching, returning, and refurbishing reusable satellites. Regulatory hurdles also persist, particularly in obtaining reentry licenses in the U.S., prompting Lux Aeterna to partner with Australian entities for its initial missions.
Despite these challenges, Taylor believes that regulatory processes will evolve alongside the reentry industry, allowing for increased launch frequencies. "The support we're receiving indicates that now is the moment for a major shift in orbital operations," he said, emphasizing the importance of reusability in expanding the satellite industry.