Top 100 Space startups in USA

Sep 08, 2026
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1
Stoke Space
Funding: $2.4B
Stoke Space is a developer of reusable rockets that provide access to and from any orbit to the satellite industry. It's attempting to compete with SpaceX in the low-cost rocket launch space. Its rocket where both the booster stage and the payload-carrying second stage come back to Earth so it can be reused cheaply. To shield the second stage of the rocket from the extreme heat caused when it is reentering the atmosphere, Stoke flows super-cooled liquid hydrogen through its thermal shielding, a unique active cooling solution. Stoke expects first vehicle, the Nova Pathfinder, to take flight in early 2027.
2
Starcloud
Funding: $443.9M
Starcloud offers cloud computing and data relay to satellites in space. The company has already launched a satellite with an Nvidia H100 GPU into orbit, becoming the first to launch a LLM on a powerful Nvidia GPU beyond Earth. The satellite also carries Gemma, Google's open source large-scale language model. This makes it the world's first data center for AI in space.
3
SpaceX
Funding: $11.8B
SpaceX is Elon Musk's leading space company, having achieved numerous advances in rocket propulsion, reusable launch vehicles, human spaceflight and satellite constellation technologies. It's the dominant global launch provider, surpassing all others in launch frequency. Its Falcon rockets launch 1-3 times per week. The company operates its own Starlink satellite constellation, which provides satellite internet worldwide. SpaceX also builds Dragon capsules for delivering human missions to the space station. It's building Starship, the largest launch vehicle in history, which aims to fully realize the company's vision of a fully reusable, cost-effective and adaptable launch vehicle. SpaceX is also developing its own spacesuit and astronaut as part of its Polaris program and human lander for lunar missions as part of the Artemis program.
4
Northrop Grumman
Funding: $3.7B
Northrop Grumman is an aerospace, defense, and security company that offers technology and security solutions.
5
Sierra Space
Funding: $2.2B
Sierra Space implements complex space projects, including satellite missions (using its own small, high-performance, and affordable satellites for in-orbit servicing) and space stations. The company also develops new technologies and systems for spacecraft, including solar-powered electrical systems, surface-mount technology to significantly reduce space power supply lead times, hypersonic engines and life support systems. Sierra's most famous product is the reusable Dream Chaser spacecraft, designed to deliver cargo and crew to and from the station. It is the only commercial spaceplane capable of takeoff and landing.
6
Rocket Lab
Funding: $2B
Rocket Lab delivers a range of complete rocket systems and technologies for fast and low-cost payload deployment.
7
Relativity Space
Funding: $1.4B
Relativity Space is an aerospace company that designs, develops, and builds 3D printed rockets.
8
True Anomaly
Funding: $1.1B
True Anomaly develops space security technologies. Its AI platform aims to fill a critical gap in space situational awareness and defensive operations and consists of Mosaic software for geospatial imagery analysis and hardware, including a line of autonomous spacecraft capable of rendezvous and close-proximity operations. These spacecraft, dubbed Jackal, are equipped with a suite of sensors and cameras for tracking, observing, and collecting data on objects in space. Jackal offers high maneuverability, regardless of payload and low cost. Its high-performance propulsion system and secure software base provide unmatched autonomy and control - designed from the ground up for highly dynamic missions to gain space superiority in any competitive orbital environment.
9
Impulse Space
Funding: $1B
Impulse Space develops orbital maneuvering vehicles for last-mile cargo delivery.
10
Planet Labs
Funding: $1B
Planet operates own satellite constellation and provides a platform for geospatial data analysis for various industries (agriculture, maritime, energy, insurance, etc.). The company manufactures own small satellites. Its flagship satellite, Owl, provides near-daily imagery at 1-meter resolution across the entire Earth's surface to support critical global safety and environmental sustainability measures, while also ensuring uninterrupted communications. The Pelican satellite is designed to perform missions faster and with greater clarity thanks to ultra-high-resolution imagery. Its improved optical performance and extended spectral range are designed to deliver sharper and more detailed images.
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