Alternatives to solestial

Developing reusable spacecraft to manufacture pharmaceuticals and high-end materials in microgravity for Earth use.

Specializes in plasma propulsion systems for spacecraft.

Specializes in propulsion systems for small satellites.

Develops radiation shielding solutions for space.

Developing the world's first fully reusable satellite platform to enable high-tempo, cost-effective orbital operations.

Global aerospace and defense company producing business jets, combat vehicles, submarines, and IT services.

Designs and manufactures spacecraft solutions for government and commercial customers.

Building a space-based economy with a reusable spaceplane and orbital destinations.

Designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, and missiles worldwide.

European private space ventures redefining independent orbital infrastructure.

Indian rocket startup preparing for the country's first private orbital launch.

A leading enabler of the new space economy, specializing in 3D-printed satellite components and systems.

Developing next-generation commercial space stations to enable long-term human presence and microgravity research.

Developing space-based solar power technology.

Building ultrathin, flexible, and efficient solar cells for spacecraft.

Rocket engine manufacturer for launch and in-space applications.

Building satellites for very low Earth orbit (VLEO) to advance global connectivity and insight.

Developing large, cost-effective, deployable solar arrays for satellites.

A Spanish company developing small satellite launch vehicles.

Provider of space domain awareness, intelligence, and advanced missile defense technology solutions.

Provides micro-propulsion and component solutions for satellites.

Develops electrospray propulsion systems for satellites.

Japanese space tech startup developing hybrid rocket propulsion systems for satellite, launch, defense, and security applications.

A next-generation commercial space station for the post-ISS low-Earth orbit economy.

Develops in-orbit infrastructure and components for space sustainability.

Develops innovative, iodine-fueled electric propulsion systems for small satellites.

Develops electric propulsion solutions for satellites.

Building data centers in space.

Developing reusable satellites to manufacture advanced semiconductor materials in space for Earth-based applications.

Market infrastructure platform for the global space economy.

Developing advanced energy solutions for space exploration.

Provides software for space situational awareness and operations.

Developing space infrastructure for data centers and beyond.

Enabling scalable, low-cost space-to-Earth laser communications.

Operating the world's only commercial fleet of flight-ready MACH 2+ supersonic aircraft for space launch.

Hypersonic aircraft manufacturer building high-Mach vehicles for national defense and rapid global transport.

A global leader in space and defense technology solutions.

Designs and manufactures advanced unmanned aerial systems (UAS) for defense and public safety.

Developing space-based solar energy systems for continuous, weather-independent power.

Digitizing and automating airspace management for safe drone integration.

A European satellite constellation and data services company.

Manufactures solar cells and panels for satellites.

Designs and manufactures microsatellites for Earth observation, specializing in wildfire detection.

German startup developing hybrid-propulsion rockets for cost-effective satellite launches.

Empowering the world with Earth observation data from microsatellites.

Develops and operates small satellites and provides AI-powered Earth observation data analytics.

Advanced greenhouse gas monitoring technology from space using miniaturized SWIR imager and micro-LIDAR instruments.

Developing the world's first sustainable supersonic airliner.

Provides test and operations execution software for complex systems.

Capella Space builds and operates a constellation of Synthetic Aperture Radar (SAR) satellites for Earth observation.

Building the first and only space-based cellular broadband network connecting directly to standard mobile phones.

AI-driven satellite data compression platform to optimize transmission and storage of Earth observation data.

Orbital transfer vehicles for rapid satellite deployment and repositioning.

Software for space situational awareness and collision avoidance.

Satellite IoT connectivity provider.

Building a global network of ground-based laser stations for precise orbital object tracking.