CAPE CANAVERAL, Fla. — A United States military spaceplane carrying military experiments, payloads and satellites launched out of Cape Canaveral Monday night at 8:07 p.m.
The exact mission of the X-37B has not been revealed, though the United States Space Force has said that there are "multiple cutting age" experiments onboard.
The USSF and NASA have revealed that their Seeds-2 experiment is on board, which seeks to explore the long-term effects of radiation on plant seeds.
It's the first competitively-won Air Force mission for Falcon Heavy. SpaceX outbid ULA's Delta IV Heavy -- with an ultimate price tag of $130 million.
It's the seventh experimental mission for the X-37B, and the Falcon Heavy is the most powerful rocket to launch it yet.
“The X37B continues to equip the United States with the knowledge to enhance current and future space operations. X-37B Mission 7 demonstrates the USSF’s commitment to innovation and defining the art-of-the-possible in the space domain," said Chief of Space Operations Gen. B. Chance Saltzman in a statement.
SpaceX originally targeted Dec. 11, but the launch was rescheduled several times.