The Ares I-X aft assembly nears the Vehicle Assembly Building at NASA's Kennedy Space Center.

The Ares I-X aft assembly nears the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. It is being moved to the VAB for stacking to complete the Ares I-X test vehicle. The aft assembly will be the first segment to be stacked on the mobile launch platform in the VAB. 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 no earlier than Aug. 30 from Launch Pad 39B. Photo credit: NASA/Jim Grossmann