CAPE CANAVERAL, Fla. – 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

CAPE CANAVERAL, Fla. – The Ares I-X aft assembly moves toward the door of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. Inside, it will be stacked with other segments 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

CAPE CANAVERAL, Fla. – The Ares I-X aft assembly is being moved to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. There it will be stacked with other segments 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

CAPE CANAVERAL, Fla. – The Ares I-X aft assembly moves inside the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. It will be stacked with other segments 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

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lifted across the VAB transfer aisle. The stack will be hoisted into the upper regions of the VAB and lowered onto the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – The Ares I-X aft assembly is moved out of the Rotation, Processing and Surge Facility at NASA's Kennedy Space Center in Florida. It is going to the Vehicle Assembly Building 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

CAPE CANAVERAL, Fla. – The Ares I-X aft assembly moves away from the Rotation, Processing and Surge Facility at NASA's Kennedy Space Center in Florida. It is going to the Vehicle Assembly Building 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

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lifted into the upper regions of the VAB. The stack will be lowered onto the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lifted from its stand. The stack will be hoisted into the upper regions of the VAB and lowered onto the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lowered onto the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lowered toward the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lowered into High Bay 3. It will be placed on the mobile launch platform. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers keep watch as the Ares I-X aft booster segment with the aft skirt is lowered toward the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is moved to High Bay 1 where it will be lowered onto the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers keep watch as the Ares I-X aft booster segment with the aft skirt is lowered toward the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the Ares I-X aft booster segment with the aft skirt is lowered toward the mobile launch platform in High Bay 3. This is the start of the buildup of the Ares I-X launch vehicle for the flight test targeted for no earlier than Aug. 30. 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. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – The Ares I-X aft center booster segment arrives in the transfer aisle of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The Ares I-X launch vehicle segments are being stacked 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. Launch is targeted for no earlier than Aug. 30 from Launch Pad 39B. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – The Ares I-X aft center booster segment rolls toward the open door of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The Ares I-X launch vehicle segments are being stacked 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. Launch is targeted for no earlier than Aug. 30 from Launch Pad 39B. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – The Ares I-X aft center booster segment is transported from the Rotation, Processing and Surge Facility to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The Ares I-X launch vehicle segments are being stacked 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. Launch is targeted for no earlier than Aug. 30 from Launch Pad 39B. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – The Ares I-X aft center booster segment rolls toward the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The Ares I-X launch vehicle segments are being stacked 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. Launch is targeted for no earlier than Aug. 30 from Launch Pad 39B. Photo credit: NASA/Jim Grossmann