Dark

Learn about Dark, a French aerospace company that developed orbital interception technology, spacecraft propulsion, and debris removal systems for space security.

Dark was a French aerospace technology company developing orbital interception systems, spacecraft propulsion, and technologies for removing hazardous objects from Earth’s orbit. Its Interceptor concept was designed for rapid-response missions involving space debris removal and orbital security. The company’s HADES program focused on demonstrating in-orbit detection, proximity operations, and controlled reentry, while its SHEITAN engine research supported the development of propulsion systems. Dark conducted propulsion testing and engineering activities before publicly announcing the conclusion of its operations in 2026. Its work addressed emerging requirements for responsive orbital intervention and space infrastructure protection.

Sierra Nevada Corporation

Sierra Nevada Corporation (SNC) specializes in delivering electronic systems for the aerospace and defense sectors.

Sierra Nevada Corporation (SNC) is an aerospace and defense company developing satellite mission systems, secure communications, and intelligence technologies for national security operations. Its space capabilities include satellite systems, the Vindlér satellite constellation, space-related cybersecurity, and software for integrating intelligence and surveillance data. The company also develops electronic warfare systems, cryptographic devices, and AI-enabled mission technologies. SNC established Sierra Space as a separate commercial space business in 2021, while retaining defense and space mission capabilities within its own operations.