The Delta rockets have been a workhorse for the United States space program for over 60 years. They started out as a military missile but eventually became a launch vehicle for important missions.
The very last Delta IV Heavy rocket blasted off on April 9th, 2024. It carried a secret payload for the National Reconnaissance Office on its journey. This marked the end of the Delta program entirely, including all the different Delta models (I, II, III, and IV).
But now the Vulcan rocket is replacing the Delta. It’s designed to be cheaper to use and more powerful. The Vulcan uses special engines that can be reused on future flights, which is even better for the environment.
Here are some key things to remember about the Delta rockets and their replacement:
- Delta rockets have been around for over 60 years!
- The Vulcan rocket is replacing the Delta because it’s cheaper and more powerful.
- The Vulcan’s engines can be reused on future flights.
- The Vulcan will be used for military and commercial missions.
Even though the Delta rockets are no longer flying, they leave behind a legacy of important space exploration and national security work.
