The U. S. Golden Dome space-based missile defense program, estimated to cost $185 billion, has passed one of its first major development milestones. Companies involved in creating space-based interceptors have successfully completed a series of key tests, according to Bloomberg.

The program’s contractors include SpaceX, Northrop Grumman and other U.S. companies. During the initial stage, developers tested key elements of the future system, including the transmission of data from sensors directly to an interceptor. The propulsion systems of the vehicles were also demonstrated.

Following the completion of these tests, the program is moving to the next stage. Project leader General Michael Guetlein said contractors will now have to demonstrate that the technologies can operate directly in space.

The first successful test of the advanced system took place in late June. Pentagon chief Pete Hegseth announced the results at the time and personally attended the launches.

According to earlier reports, the Pentagon plans to conduct and complete the initial round of tests under the Golden Dome space-based missile defense program by the end of 2026.

Preparations for the current stage began earlier. The Pentagon had already completed work on the system’s design, while the U. S. Space Force awarded several contracts for the development of space-based interceptor prototypes.

The $185 billion program is therefore gradually moving from testing individual components toward demonstrating the technology in the environment for which it was designed. The next major milestone will be proving the capabilities of the future interceptors in space.