In the Vehicle Assembly Building's High Bay 4 assembly of the Ares I-X rocket nears.

In the Vehicle Assembly Building's High Bay 4, assembly of the Ares I-X rocket nears completion. The yellow framework, nicknamed the "birdcage," lifts Super Stack 5 toward an opening at the 16th floor crossover into the transfer aisle. The stack will be positioned on top of the segments already in place on the mobile launcher platform in High Bay 3, completing assembly of the 327-foot-tall rocket. Five super stacks make up the rocket's upper stage that is integrated with the four-segment solid rocket booster first stage. Ares I-X is the test vehicle for the Ares I, which is part of the Constellation Program to return men to the moon and beyond. The Ares I-X flight test is targeted for Oct. 31, pending formal NASA Headquarters approval. Photo credit: NASA/Dimitri Gerondidakis