Exoterra Resources, a US-based space technology company specializing in in-space mobility and sustainable space systems, is providing the propulsion solutions designed to support modern small satellite missions and advanced orbital operations. Exoterra’s propulsion portfolio addresses the growing demand for efficient, scalable and space-qualified propulsion systems that enable precise maneuvering, extended mission lifetimes and flexible orbital operations. Exoterra Resources’ propulsion solutions are engineered to support a wide range of spacecraft platforms from small satellites to more complex mission architectures. The company’s approach focuses on delivering propulsion systems that balance performance, integration simplicity and operational reliability. By combining electric propulsion technologies with system-level integration, Exoterra enables satellite operators to execute orbit raising, station keeping, collision avoidance and end-of-life disposal.
Iris Propulsion Module
The Iris Propulsion Module is Exoterra’s integrated, turnkey propulsion solution designed to simplify spacecraft integration while delivering reliable in-space maneuvering capability. Iris combines electric propulsion hardware, power processing, propellant storage and control electronics into a single and space-qualified module. This system-level design reduces the complexity typically associated with propulsion subsystem integration and allowing spacecraft developers to incorporate maneuvering capability without extensive custom engineering. The Iris module is intended to support key mission functions such as orbit insertion support, orbit maintenance, constellation phasing and controlled deorbiting at end of mission. The modular architecture allows compatibility with a range of small satellite buses, helping operators tailor propulsion capability to mission-specific requirements. By offering a complete propulsion solution rather than discrete components, Iris supports faster spacecraft development cycles and more predictable on-orbit performance.
Halo Thrusters
The Halo Thrusters form the core electric propulsion technology underpinning Exoterra Resources’ propulsion systems. These thrusters are based on Hall-effect electric propulsion principles and are designed to deliver efficient thrust with low propellant consumption and making them well suited for long-duration missions. Halo thrusters provide high specific impulse compared to chemical alternatives, enabling satellites to achieve significant delta-v over their operational lifetime while minimizing mass impact. The Halo thruster family is designed to support multiple mission profiles, including station keeping, orbit adjustment and precise maneuvering for small satellites and hosted payload platforms. Emphasis is placed on thermal stability, plume control and long operational life, aligning the thrusters with the reliability requirements of commercial, government and research missions. When integrated into Exoterra’s propulsion modules or spacecraft systems, Halo thrusters enable sustained in-space operations that extend mission capability beyond what is achievable with passive or limited-propulsion designs.
The Iris Propulsion Module and Halo Thrusters reflect Exoterra Resources’ focus on enabling sustainable and responsible space operations. By providing propulsion systems that support controlled orbital maneuvering and end-of-life disposal, the company contributes to improved space traffic management and debris mitigation practices. These solutions are applicable across Earth observation, communications, technology demonstration and future exploration-related missions that require dependable in-space mobility. The Exoterra Resources’ propulsion solutions offer spacecraft developers practical tools to manage orbits, extend mission lifetimes and operate responsibly in increasingly populated orbital regimes.
About Exoterra Resources
Exoterra Resources, is a US-based space technology company focused on developing systems that support sustainable in-space operations and future space exploration missions. Headquartered in Littleton, Colorado (USA), Exoterra designs and manufactures technologies spanning electric propulsion, in-space mobility and environmental control and life-support systems (ECLSS). The company’s portfolio includes electric propulsion solutions for small satellites and spacecraft, as well as life-support and thermal management technologies derived from spaceflight requirements. Exoterra’s work supports commercial, government and research missions by addressing critical challenges such as spacecraft maneuverability, long-duration operation and resource efficiency in space environments. Through the engineering-driven approach, Exoterra Resources contributes practical and space-qualified technologies aligned with the evolving needs of orbital infrastructure and future human and robotic space missions.
