Alternatives to Observable Space

Designs, manufactures, and launches advanced rockets and spacecraft, aiming to make humanity multiplanetary.

A global leader in space and defense technology solutions.

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

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

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

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

Air defense startup focused on mass-producing low-cost interceptors for drones and missiles.

Orbital transfer vehicles for rapid satellite deployment and repositioning.

A European satellite constellation and data services company.

NASA-inspired fire tech startup developing infrasound-based fire defense systems that detect and suppress fires without water or chemicals.

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

Designs and manufactures flight-proven aerospace and defense systems, including rocket engines and hypersonic capabilities.

Develops radiation shielding solutions for space.

Loft Orbital provides a full-stack solution for deploying and operating microsatellites in orbit.

Develops electrospray propulsion systems for satellites.

Global aerospace and defense technology innovator providing advanced solutions across multiple domains.

Satellite IoT connectivity provider.

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

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

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