CAPE CANAVERAL, Fla. — The United Launch Alliance said its Atlas V rocket arrived at its Cape Canaveral launchpad for Saturday’s liftoff of Lucy.
The rocket will deliver NASA’s Lucy spacecraft to a hyperbolic orbit.
The mission will study the Trojan asteroids, remnants from formation of the outer planets 4.5 billion years ago.
Lucy will be the first spacecraft to visit the Trojan asteroids.
ULA said the seven-hour launch countdown will begin Friday night.
The rocket will liftoff at 5:34 a.m. Saturday from space Launch Complex-41 at Cape Canaveral Space Force Station.
During a prelaunch briefing, officials said the weather will be a 90% go for launch.
Lucy has a 23-day launch window. Should the teams need a backup window, they have it.