SpaceX's Falcon 9 rocket will deliver the spy satellite, known as NROL-76, to orbit from historic Launch Complex 39A (LC-39A) at NASA's Kennedy Space Center in Florida.
The two hour launch window opens on Sunday at 7 a.m. EDT. A backup launch window opens on Monday at 7 a.m. EDT, SpaceX said in a statement.
Following stage separation, Falcon 9's first stage will attempt to land at Cape Canaveral Air Force Station, Florida.
Not much about the rocket's secretive payload is known.
Unlike commercial launches, SpaceX did not say how long it would take the satellite to deploy or to what orbit it would travel, the Los Angeles Times reported on Friday.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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