Photos: Delta 4-Heavy launch gallery

Boosted to an altitude of 3,604 miles by a Delta 4 rocket, NASA’s Orion deep space exploration vehicle fell back to Earth Friday in the program’s maiden voyage, slamming into the atmosphere at nearly 20,000 mph, enduring a hellish 4,000-degree re-entry and settling to a Pacific Ocean splashdown to wrap up a critical unmanned test flight.

The splashdown of Orion in the Pacific Ocean concludes the EFT-1 shakedown cruise for NASA’s new space capsule.

Get a preview of Thursday’s United Launch Alliance Delta 4-Heavy rocket flight in these video highlights packages from previous missions by the big booster for NASA and the National Reconnaissance Office from Cape Canaveral in Florida and Vandenberg Air Force Base in California.