Workers watch closely as a crane lifts the fifth segment simulator center from the transporter.

In the extended duration orbiter lab, or EDO, of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers watch closely as a crane lifts the fifth segment simulator center from the transporter. The segment will be moved to supports on the floor. Another segment is at right. 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. Ares I is the essential core of a safe, reliable, cost-effective space transportation system that eventually will carry crewed missions back to the moon, on to Mars and out into the solar system. Ares I-X is targeted for launch in July 2009. Photo credit: NASA/Troy Cryder