Sierra Space ranks 45 on the Space 100 with a score of 75; Orbit Fab ranks 65 with 70. Orbit Fab is ahead on deployment, commercials and leverage. Sierra Space is ahead on production, technology and firepower. Level on progress and positioning. Orbit Fab is based in Lafayette, United States, Sierra Space in Louisville, United States. Sierra Space: Established. Orbit Fab is named in 111 signals and Sierra Space in 19.
Orbit Fab sells NEST orbital fuel depots to spacecraft operators, enabling in-orbit propellant storage and repeated refueling.
Darker bar: ahead of the other company on that measure.
Orbit Fab is a private U.S. space-logistics company developing RAFTI refueling interfaces, GRIP docking hardware, depots, and fuel-shuttle architectures for satellite servicing. Its ecosystem reach includes U.S. Space Force, DIU, AFRL, NASA, ESA, the UK Space Agency, Astroscale U.S., Impulse Space, Northrop Grumman, Airbus Defence and Space, Thales Alenia Space, and ClearSpace; however, its first commercial or government on-orbit propellant transfer has not yet been demonstrated. In 2025-26 it added ESA/UK-funded ASTRAL work, NASA Gateway fluid-transfer work, Airbus and Thales partnerships, an on-orbit Podracer demonstration, and more than $25 million of Stride-led interim financing, while its original 2025 hydrazine-service target slipped to missions now scheduled for 2027.
111 signals name Orbit Fab.
316 facts on file.
Sierra Space develops and manufactures spacecraft platforms including the reusable Dream Chaser orbital vehicle and satellites for SDA missile-warning and missile-defense programs.
Darker bar: ahead of the other company on that measure.
Sierra Space is a US space company whose operating engine is now defense manufacturing: an SDA Tranche 2 award ($740M/18 missile-warning satellites, first structures completed early), a new $798M AMDT3 award (July 2026, 18 more Tranche 3 tracking satellites for Golden Dome), and a classified $450M intelligence contract. A new CEO (ex-Maxar Dan Jablonsky, February 2026) is converting it into a high-rate manufacturer, while its Dream Chaser was downgraded (NASA CRS-2 modified, first flight now a free-flyer demo with ISS docking cancelled). It raised a $550M Series C in March 2026 (>$1.4B cumulative, a $5.3B 2023 valuation).
19 signals name Sierra Space.
34 facts on file.
Sierra Space ranks 45 on the Space 100 with a score of 75; Orbit Fab ranks 65 with 70. Orbit Fab is ahead on deployment, commercials and leverage. Sierra Space is ahead on production, technology and firepower. Level on progress and positioning. Orbit Fab is based in Lafayette, United States, Sierra Space in Louisville, United States. Sierra Space: Established. Orbit Fab is named in 111 signals and Sierra Space in 19.
Sierra Space ranks 45 on the Space 100 with a score of 75; Orbit Fab ranks 65 with 70. Orbit Fab is ahead on deployment, commercials and leverage. Sierra Space is ahead on production, technology and firepower. Level on progress and positioning. Orbit Fab is based in Lafayette, United States, Sierra Space in Louisville, United States. Sierra Space: Established. Orbit Fab is named in 111 signals and Sierra Space in 19. Both company files carry the scores on eight measures, the facts with sources and the latest signals.
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