The Ares I-X forward center segment heads through the door of the Vehicle Assembly Building or VAB.

At NASA's Kennedy Space Center in Florida, the Ares I-X forward center segment heads through the door of the Vehicle Assembly Building, or VAB. The launch vehicle is being assembled in the VAB's High Bay 3. Part of the Constellation Program, the Ares I-X is the test vehicle for the Ares I, which is the essential core of a space transportation system that eventually will carry crewed missions back to the moon, on to Mars and out into the solar system . The Ares I-X flight test is targeted for no earlier than Aug. 30. Photo credit: NASA/Jack Pfaller