Top 31 Space Engine and Propulsion startups

Updated: May 03, 2026
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These startups are developing engines for rockets, spacecraft and satellite propulsion, deep space exploration vehicles.
1
Pangea Aerospace
Country: Spain | Funding: €27.1M
Pangea Aerospace develops advanced rocket engines for use in launch vehicles and spacecraft.
2
Firefly Aerospace
Country: USA | Funding: $796.6M
Firefly Aerospace provides launch vehicles, spacecraft, and in-space services for small payloads. Firefly’s on-orbit services include deorbiting services to help minimize space debris. Firefly’s lunar lander is flying annual missions to the Moon with payload services customized to the technology and exploration goals of each customer.
3
Galactic Energy
Country: China | Funding: CN¥4.9B
Galactic Energy Aerospace Technology is a private aerospace company that engages in the low-cost commercial space launch business.
4
Impulse Space
Country: USA | Funding: $525M
Impulse Space develops orbital maneuvering vehicles for last-mile cargo delivery.
5
Ursa Major
Country: USA | Funding: $434.3M
Ursa Major provides a propulsion system for space launch, hypersonics, and national security.
6
Agnikul Cosmos
Country: India | Funding: $85.8M
Agnikul is a startup that manufactures and launches orbital-class rockets for micro- and nanosatellites. The company has already demonstrated a suborbital rocket launch and plans to launch small satellites into low-Earth orbit using its 3D-printed Agnibaan rocket. Its single-piece semi-cryogenic engine is also 3D-printed from Inconel and includes everything from the injector to the cooling channels. After printing, the company performs CT scanning, heat treatment, grinding and cleaning in preparation for launch. The startup is also working on refurbishing the launch vehicle's lower stage, which can be reused for subsequent missions.
7
Exotrail
Country: France | Funding: $75.4M
Exotrail provides orbital services for small satellites, including "last mile" delivery (from payload integration to final orbit placement), satellite inspection, and end-of-life management. The company also develops flexible and powerful electric propulsion systems for satellites based on Hall-effect technology. In Exotrail's ion engine electrons emitted by the cathode are captured by a magnetic field and used to ionize the propellant, creating plasma in the discharge channel. The plasma is then accelerated to generate thrust by the electric field created between the anode and cathode. Hall-effect thrusters have been in use for decades and are installed on most large satellites. They combine the high impulse of an electric propulsion system with a very high thrust-to-power ratio.
8
HyPrSpace
Country: France | Funding: €65.1M
HyPrSpace is developing a small launch vehicle called the Orbital Baguette 1 (OB-1), capable of launching up to 235 kilograms into orbit. The company is also working on a suborbital launch vehicle - Baguette One, intended as a technology demonstrator for the OB-1. The distinctive feature of HyPrSpace rockets is their hybrid engine, which combines solid propellant (plastic) with liquid oxidizer. Several engines will power the first stage of the orbital rocket and single engine with a modified nozzle will power the second stage. The Baguette One suborbital launch is planned for 2027. The company says it will not be cheaper than SpaceX but is committed to high-quality customer service.
9
Benchmark Space Systems
Country: USA | Funding: $58.1M
Benchmark Space Systems is an aerospace company that offers propulsion solutions for small satellite applications.
10
Safran
Country: France
Safran is an international technology group with divisions in aerospace, defense, and security.
Boris Maslennikov
Editor: Boris Maslennikov
Boris Maslennikov is a senior editor for Space-Startups. He has spent more than a decade covering the global space industry as a business journalist. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science from the California Institute of Technology. In his free time, Boris enjoys studying history and mathematics, with a particular interest in the history of mathematics. You can contact Boris at borismaslenikov(at)space-startups(dot)com