Final Launch of Delta IV Heavy Marks End of an Era for ULA

The Delta IV Heavy rocket completed its last mission by launching a classified spy satellite, signaling a significant transition in U.S. space capabilities.

The Delta IV Heavy rocket, known for its impressive lift capacity and unique hydrogen fireball launch effect, has been retired after 16 successful missions.
This final mission carried a classified National Reconnaissance Office spy satellite into orbit, marking the end of 64 years of Delta rocket operations.
United Launch Alliance (ULA) is transitioning to the Vulcan rocket, aiming for more cost-effective and higher-performance capabilities.
The retirement of the Delta IV Heavy reflects a shift toward using smaller, more numerous satellites and lower-cost launch options like those offered by SpaceX.
The Delta IV Heavy was once the most powerful operational rocket in the world and played a crucial role in U.S. space exploration and national security.