TITUSVILLE, Fla. -- SpaceX just landed a massive contract to use its Falcon Heavy rocket to launch a top secret military satellite.

The U.S. Air Force has tapped the world's most powerful rocket to launch the classified AFSPC-52 satellite, sometime in the summer or fall of 2020.

This is the first classified national security payload awarded to SpaceX's Falcon Heavy.

The rocket made its debut back in February at the Kennedy Space Center.

SpaceX has relied on reusability to help drive down the cost of launches and edge out its competition.

"SpaceX is honored by the Air Force's selection of Falcon Heavy to launch the competitively-awarded AFSPC-52 mission," said SpaceX President and COO Gwynne Shotwell. 

"On behalf of all of our employees, I want to thank the Air Force for certifying Falcon Heavy, awarding us this critically important mission, and for their trust and confidence in our company. SpaceX is pleased to continue offering the American taxpayer the most cost-effective, reliable launch services for vital national security space missions."

The military chose to give SpaceX the contract for $130 million, much lower than United Launch Alliance's Delta IV, which has a price tag of around $350 million.

United Launch Alliance spokeswoman Jessica Rye said: "Competition is good for our nation and our customers,  but we are disappointed our offering was not selected. Since the Air Force's phase 1A competition has begun, ULA has competed very well and has won numerous critical launch services.

"ULA will continue to offer the best value launch service, most reliable rockets, and on-time delivery of vital assets in support of U.S. warfighters around the world. Reliably launching our customer's missions remains our top priority like we have for the more than 125 successful missions we have launched."

You won't have to wait until 2020 to catch the Falcon Heavy in action. The next launch of the heavy-lift rocket is set for this fall.