Analysis
Besxar is testing whether the vacuum of space can make better semiconductor wafers than an Earth-based clean room, according to TechCrunch. The Washington, D.C.-based startup, founded by former OpenAI staffer Ashley Pilipiszyn, has signed a launch agreement with SpaceX to fly small manufacturing pods it calls Fabships across a dozen Falcon 9 booster missions.
Each Fabship is roughly the size of a microwave oven and rides alongside the booster, returning to Earth minutes after liftoff rather than reaching orbit. Besxar completed its first flight on July 6, 2026, aboard the Starlink 10-50 mission, flying two "Clipper Class" Fabships alongside 29 Starlink satellites; the company says early wafer samples showed lower particulate contamination than comparable Earth-made material, despite a flight-data-system malfunction on one canister. Pilipiszyn said she approached SpaceX about the idea three years ago: "We're at a time where it's actually more cost-effective to go where the physics already works."
The pitch rests on a specific physical claim: Earth-bound clean rooms fight gravity-driven convection and airborne particulates constantly, while a wafer processed in freefall and hard vacuum is exposed to essentially none of either, at least in theory. Besxar's approach also sidesteps the years-long capital outlay of a traditional fab -- a leading-edge terrestrial semiconductor plant can cost tens of billions of dollars, while a Fabship rides as a secondary payload on a mission SpaceX is already flying for Starlink.
“Each Fabship is roughly the size of a microwave oven and rides alongside the booster, returning to Earth minutes after liftoff rather than reaching orbit.”
Besxar has raised close to $14 million to date, including a $9 million seed round led by Dauntless Ventures and Overture VC -- a fraction of what land-based fab builders spend, though also a fraction of the capital its closer orbital-manufacturing peers have raised. It is one of several startups chasing orbital manufacturing:
- Varda Space Industries -- the closest comp, raised a $42 million Series A in 2021 and a $187 million Series C more recently, focused on in-space pharmaceutical production rather than chips.
- Space Forge -- a UK-based rival also targeting orbital semiconductor manufacturing.
- United Semiconductors -- another named competitor in the space-fab race.
Besxar's next milestones, over the coming two years, involve heating wafers and material deposition in orbit rather than just testing exposure to vacuum -- the harder engineering step that determines whether this becomes a real manufacturing line or stays a repeatable physics demonstration.
