Space Tech Startups

Stoke Space develops fully reusable rockets for space transportation and mobility services. The company focuses on rapid iteration from prototype to launch, with a mission to enable seamless mobility to, through, and from space.

53 investors

Axiom Space develops commercial space stations and provides access to low-Earth orbit microgravity environments for research, manufacturing, and innovation by governments, researchers, and organizations.

47 investors

Boom Supersonic develops Overture, a supersonic airliner designed to fly at twice the speed of current airliners and run on sustainable aviation fuel, serving both civil airline and government/defense markets. The company also develops Symphony, the propulsion system that will power Overture.

44 investors

Astranis designs, builds, and operates small geostationary communications satellites that provide dedicated, secure network connectivity to large enterprises, sovereign governments, and the US military. The company operates its satellites globally from its Northern California headquarters.

40 investors

Relativity Space designs, builds, and launches rockets, including Terran 1 (a 3D-printed rocket) and Terran R, a reusable medium-heavy lift launch vehicle. The company uses a vertically integrated approach combining 3D printing, AI, and autonomous robotics to manufacture launch vehicles with fewer parts.

37 investors

Varda industrializes low Earth orbit by manufacturing pharmaceuticals and other specialized products in space, then returning them to Earth via reusable reentry capsules. The company develops both in-space production infrastructure and the vehicles needed to support commercial orbital manufacturing.

37 investors

Starcloud is a deep-tech company building large-scale data center infrastructure designed to operate in space. Its team comes from aerospace and cloud-hardware backgrounds including SpaceX, Amazon's Leo satellite constellation, Microsoft Azure, and fusion energy programs.

34 investors

Impulse Space develops in-space mobility infrastructure and spacecraft, enabling transportation and logistics between Earth orbit, the Moon, and Mars. The company serves commercial, defense, and scientific customers seeking reliable and affordable orbital mobility solutions.

29 investors

Loft Orbital operates space infrastructure, providing satellites equipped with sensing resources, onboard edge compute, and connectivity that let customers run missions without deploying their own hardware. It serves commercial and government customers, including national security stakeholders, through virtual missions on its satellite constellation.

27 investors

Turion Space builds space infrastructure spanning maneuverable spacecraft, mission planning software, and orbital logistics such as refueling and servicing, with capabilities for space domain awareness and rendezvous proximity operations. The company also develops technology aimed at extracting resources by mining near-Earth asteroids.

27 investors

Planet operates a web-geo platform that provides daily satellite imagery and foundational analytics of Earth's landmass for businesses, governments, and research institutions. The company serves customers across agriculture, defense, and other sectors seeking to monitor global change, scale operations, and mitigate risk through satellite data and APIs.

26 investors

Zeno develops nuclear batteries that convert heat from decaying radioisotopes into electricity for extended-duration applications in space and deep-sea environments where conventional power sources are inadequate. The batteries are designed for frontier missions requiring reliable power without refueling or maintenance for years.

24 investors

Array Labs develops radar technology for aerospace and other leading industries. The company focuses on systems engineering, software development, and radar systems innovation.

22 investors

AstroForge is a space mining company that extracts platinum group metals and other valuable materials from asteroids to integrate into Earth's supply chains. The company aims to reduce reliance on terrestrial mining by developing commercial deep-space resource extraction missions.

22 investors

True Anomaly designs and builds hardware and software systems for space security and defense. The company serves military and government space forces with technologies for on-orbit operations and counterspace capabilities.

22 investors

Xona Space Systems operates Pulsar, a positioning, navigation, and timing (PNT) service delivered from a constellation of small satellites in Low Earth Orbit that broadcasts a new signal to augment or replace GPS. The service can upgrade existing GPS devices to centimeter-level accuracy via software and targets systems requiring high-integrity, resilient navigation across many use cases.

22 investors

Albedo develops a flight-proven platform for Very Low Earth Orbit operations, providing satellite-based insights and connectivity services for national security and critical infrastructure systems. The company focuses on making space infrastructure operationally viable and resilient.

21 investors

REGENT designs and manufactures Seaglider wing-in-ground-effect aircraft for regional coastal transportation and defense logistics, offering high-speed zero-emission travel between coastal cities and military applications.

21 investors

Starfish Space develops Otter, an autonomous satellite servicing vehicle that uses electric propulsion to dock with satellites for life extension and disposal. The company is working to make satellite servicing in orbit more affordable and is validating its docking technology in low Earth orbit.

21 investors

The Exploration Company develops reusable space transportation infrastructure, including a capsule system for space station logistics and rocket engines. The company serves space agencies, commercial space operators, and enables broader participation in space-based commerce and infrastructure.

20 investors

Orbit Fab builds the in-space propellant supply chain, offering commercial spacecraft refueling services and standardized refueling interfaces to enable reusable spacecraft and a sustainable space economy. The company serves commercial space operators, government space agencies, and satellite manufacturers globally.

19 investors

Venus Aerospace develops rotating detonation rocket engine (RDRE) technology and a detonation ramjet system for space, defense, and commercial high-speed and hypersonic flight. The company designs propulsion systems intended to scale across a range of performance requirements.

19 investors

Hubble has created a Bluetooth connection to space and is building a global, battery-efficient, and cost-effective network using satellite technology.

18 investors

Inversion develops spacecraft and systems to establish Low-Earth Orbit as an on-demand logistics network for rapid global transportation and defense applications. The company manufactures reentry vehicles and related hardware to enable cargo transportation across Earth via space.

18 investors