CAPE CANAVERAL, Fla. — This article has been edited to reflect that these launches have been scrubbed.
A United States military spaceplane carrying military experiments, payloads and satellites was scheduled to out of Cape Canaveral Monday night at 8:24 p.m. That launch, and the one set to follow as part of a double-header, have both been canceled.
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.
The launch was intended to be followed by the Starlink-128 mission, which would have launch at 11:05 p.m., less than three hours later.
SpaceX says they are targeting Tuesday for a rescheduled launch, but no official word yet.
