Former SpaceX Engineer Says Reusable Satellites That Return to Earth Could Transform the Space Industry

Reusable rockets have reshaped the space industry over the past decade, and now a new startup led by a former SpaceX engineer wants to bring that same kind of transformation to satellites.

Brian Taylor, who previously helped build satellites for networks such as SpaceX's Starlink and Amazon's Leo, founded Lux Aeterna in December 2024 to create satellite structures that include an integrated heat shield, allowing them to return to Earth with their payloads still intact.

The company, which emerged from stealth last year, announced a new $10 million seed round on Tuesday morning led by Konvoy, with participation from Decisive Point, Cubit Capital, Wave Function, Space Capital, Dynamo Ventures, and Channel 39. Lux Aeterna declined to disclose its valuation.

The new funding will support the design and construction of Lux Aeterna's Delphi spacecraft, which already has a confirmed place on a SpaceX rocket expected to launch in the first quarter of 2027. That mission is intended to validate Lux's technology by allowing customers to test hosted payloads and materials that will later be returned to Earth at Australia's Koonibba Test Range, in partnership with aerospace company Southern Launch.

Returning anything from space means plunging back through Earth's atmosphere at extremely high speed, a process that creates intense heat. Spacecraft that are meant to survive reentry must therefore be covered in materials capable of shielding them from that heat, which adds extra mass. Because that extra mass increases launch costs, most spacecraft are not built to return at all.

As a result, reentry has usually been reserved for human-carrying vehicles such as the Space Shuttle, which lost one orbiter due to reentry's harsh conditions, or for SpaceX's Dragon spacecraft. SpaceX's repeated efforts to land its massive Starship rocket have also shown just how difficult that challenge is to overcome for anyone who has followed those tests online.

Startups such as Varda Space and Inversion are working on the same broad problem at a smaller scale. They are building reentry capsules that would let customers conduct experiments in orbit and then bring samples back for study, or eventually deliver cargo to places on Earth at very high speed. Varda has flown five missions and successfully returned capsules on four of them, while Inversion is aiming to launch its Arc vehicle sometime this year.

A dependable way to bring payloads back from space is essential for several futuristic business models, including testing advanced materials in orbit, producing pharmaceuticals or premium electronics in microgravity, or even extracting resources such as metals from asteroids. The U.S. military has also shown interest in the idea for uses such as orbital logistics support or testing hypersonic weapon components.

Lux, however, is thinking on a larger scale. Its broader ambition is to make communications satellites and Earth observation satellites reusable. At present, satellites typically remain useful for only 5 to 10 years due to component failures, depleted propellant, or technological obsolescence. After that, they are either burned up in the atmosphere, since they lack heat shields, or pushed into graveyard orbit away from active space operations.

"Our ambitions are so much larger than just reentry," Taylor said, describing the potential for what he called a "dynamic upgrade capability." He added, "[I]f you have a payload component, whether it's compute or a hyperspectral camera, and you want to update that technology every year, instead of having to build new satellites and keep those old ones up in space, you can bring them down and go back."

It is a compelling vision, but the economics will ultimately have to make sense. The value created by those updated payloads will need to outweigh the additional cost of building, launching, returning, and refurbishing a reusable satellite.

There is also a regulatory hurdle. Lux is targeting Australia because getting a reentry license to land in the United States is currently difficult. Varda, which in 2024 returned the first commercial spacecraft to land on U.S. soil, saw its plans delayed for several months while it worked to convince the FAA that its returning capsule would not endanger people or property on the ground. Its later missions have also landed in Australia.

Taylor said he does not expect the pace of regulatory approvals to become a bottleneck over the next three or four years. Still, he does expect the FAA to evolve alongside the young reentry sector and eventually permit a faster cadence of returns.

"The folks that are backing us really believe that now is the time to put that major, major paradigm shift in orbital operations," Taylor said. "Not only reentry and bringing things back, [but] about bringing reusability to much larger sections of the satellite industry."