Space Tech Startups

Primus Aerospace, founded in 1989, provides high-complexity precision machining and build-to-print manufacturing of machined and fabricated assemblies for the aerospace and defense industries. Its work covers applications including munitions, missiles and rockets, hydraulics and actuation, engines and controls, aerostructures, and avionics.

1 investor

Prince is a precision manufacturing company providing machining services for defense, aerospace, space, and high-reliability industrial programs. It operates AS9100-certified machining facilities, including a location in Pepperell, MA.

1 investor

PromX builds distributed reactor infrastructure that converts methane and CO2 into valuable fuels and carbon products on-site, addressing greenhouse gas emissions and energy production.

1 investor

Promin Aerospace develops small orbital launch vehicles using proprietary gasification technology to eliminate space debris by consuming rocket engine tanks during flight. The company targets pico and nano satellite deployment with rapid launch timelines.

1 investor

PTX provides engineering services and strategic materials technology to U.S. Federal customers in the aerospace and energy sectors, drawing on experience across commercial and Federal projects. It offers technical and project management capabilities for critical missions and national assets.

1 investor

Pulse develops a laser-based system to deliver remote, on-demand power to satellites in low Earth orbit, addressing rising power demand from growing satellite deployments. Its product Boost transmits kilowatt-scale power over distances up to 1000km to satellite receivers.

1 investor

QEYnet is developing a global quantum key distribution (QKD) network using microsatellites to enable ultra-secure, quantum-safe encryption key exchange. It targets security-conscious organizations with data that must remain protected long-term, operating in the space-based cybersecurity and satellite technology sector.

1 investor

Quantum Qool develops thermal management technology for extreme environments, focused on radiative cooling components such as thermal radiators, leading edges, cold plates, nose cones and enclosures. It targets advanced spacecraft, satellites, landers, rovers, hypersonic vehicles and power electronics where convection and conduction are constrained.

1 investor

QuantX develops positioning, navigation, and timing (PNT) systems designed for resilient operation in contested and congested environments, including military, aerospace, and telecommunications applications.

1 investor

Ravee Optics develops ultracompact optical communication systems and laser links for small satellites, space, and airborne platforms.

1 investor

RTX designs, builds, and supports aerospace systems and defense technologies for aviation and national defense customers. The company operates through three business units spanning commercial flight and military applications.

1 investor

Redwire is an integrated aerospace and defense company that builds space infrastructure, autonomous aircraft, and multi-domain systems for government, military, and commercial customers, including NASA, the U.S. Space Force, and DARPA. Its work spans space exploration hardware, uncrewed aerial systems, and in-space pharmaceutical and biotech R&D and manufacturing.

1 investor

Re Cae is a Swiss company developing an operating system for space missions with an emphasis on sovereign control of the underlying infrastructure. The software is intended to support the management of spacecraft and space-based operations. It targets organizations and agencies conducting exploration and other activities in orbit and beyond.

1 investor

ReOrbital develops satellite servicing and in-space manufacturing technologies for government and commercial space applications. The company specializes in orbital refueling, satellite repair, and debris removal services.

1 investor

ResilienX is a systems integrator for uncrewed aviation ecosystems, connecting multi-vendor technologies into a single coherent, safe, and scalable system for agencies and operators. It offers products including a vendor-neutral data exchange (AAM OptiX), model-based systems engineering, and an in-time aviation safety management system (FRAIHMWORK) supporting the low-altitude economy and advanced air mobility.

1 investor

Revolve Robotics develops inspection, surveillance, and maintenance robots for hard-to-reach industrial environments, with applications in inspection, construction, security, public safety, and defense sectors. The company combines expertise in drone technology with robotics engineering to create mobile robots for previously inaccessible spaces.

1 investor

Ridge-i develops AI and satellite data analytics solutions for disaster prevention, forest monitoring, environmental management, and manufacturing optimization. The company serves enterprise clients and government agencies across Japan.

1 investor

RIFFAI applies artificial intelligence and hyper-multispectral satellite imagery with time-series analysis to Earth observation, detecting environmental changes and critical infrastructure. It serves industries, governments, and militaries across use cases such as renewable energy, environment monitoring, defense, intelligence, and urban settlement.

1 investor

RIVIR builds a hybrid IoT/M2M gateway system (R200 series) that combines terrestrial cellular with Starlink's Direct-to-Cellular satellite network to keep remote, mobile, and critical industrial assets connected during coverage gaps or outages. It serves sectors such as oil and gas, automotive, agriculture, utilities, environmental monitoring, and mobile network operators, integrating with existing sensors and PLCs via standard industrial protocols and REST APIs.

1 investor

Rocket Lab is an end-to-end space company providing launch services with its Electron and in-development Neutron rockets, along with spacecraft design and manufacturing, satellite components, space solar cells, and flight and ground software. It serves commercial and government satellite operators.

1 investor

Rocket Link Technology develops low-cost solid-fuel rockets built around its LTP (Low melting temperature Thermo-elastic Propellant), a thermoplastic solid propellant that can be molded quickly, remelted, and reused. The company also researches new launch and recovery methods and offers rocket-technology-based education and workforce training.

1 investor

Rovial develops high-power systems for satellites, aiming to provide greater in-orbit power capacity at lower cost than current 25-30KW satellites. It targets GEO/MEO applications such as in-orbit data processing, secure data centers, in-orbit manufacturing, high-power radars, detection payloads, lasers, and lunar missions.

1 investor

SafeKey Lab builds cybersecurity for autonomous spacecraft, offering space domain awareness, onboard defense for the command bus and onboard AI, and adversarial red-team testing through its Vela platform. It serves government space programs, commercial constellation operators, and satellite manufacturers, and offers an adjacent module for AI security in the ground segment.

1 investor

Sateliot operates a Low Earth Orbit satellite constellation built on the 5G standard, enabling unmodified commercial NB-IoT devices and smartphones to connect directly from space (D2D). It serves governments and businesses across sectors such as agriculture, logistics, defense, and environmental monitoring, with a focus on areas lacking terrestrial network coverage.

1 investor