On Tuesday, the Delta IV Heavy rocket made by United Launch Alliance made its move to nearby Space Launch Complex 37 at Cape Canaveral Air Force Station.

To form the first stage that will join Orion's service module, the rocket's three Common Booster Cores were tested, processed and assembled together. After this, it was raised on Wednesday from the horizontal position into its vertical launch configuration.

On Sunday, as the Orion launch abort system was fixed, it was moved out of the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center in Florida.

This system is made to guard astronauts if a problem comes at the time of launch by pulling the spacecraft away from the failing rocket.

In December, unmanned flight which divides the launch abort system from the crew module in normal operations and emergency, the jettison motor will be tested. Capsules have been made by the Lockheed Martin Corp for Orion's dry run.

The Orion spacecraft will be considered complete when the launch abort system is stacked on the completed crew and service modules, and also when the three systems are tested together.

The three primary core elements of the United Launch Alliance (ULA) Delta IV Heavy rocket have now assembled, forming the first stage of the launch vehicle. This will send Orion far from Earth to let NASA to study the spacecraft's performance in space.

The three Delta IV Common Booster Cores were assembled in ULA's Horizontal Integration Facility (HIF), at Cape Canaveral Air Force Station in Florida. The HIF building is placed at Space Launch Complex 37 where the mission will take off.

"The day-to-day processing is performed by ULA. NASA's role is to keep a watchful eye on everything and be there to help if any issues come up", said Merri Anne Stowe of NASA's Fleet Systems Integration Branch of the Launch Services Program (LSP).

According to Stowe, at the time of major testing, experts from NASA's Launch Services Program examined the work on consoles in Hanger AE at Cape Canaveral Air Force Station.