NASA's Ares I-X (5 images)

This undated NASA image shows technicians working on the crew module and associated launch abort tower of the Ares I-X in the NASA Langley hangar, in Hampton, Virginia. The Ares I-X rocket is part of NASA's Constellation program that, beginning in 2009, will be flying test flights with the goal of replacing the space shuttle for manned trips into outer space. (UPI Photo/Sean Smith/NASA)

This undated NASA image shows technicians working on the crew module simulator for training in the Ares I-X in the NASA Langley hangar, in Hampton, Virginia. The Ares I-X rocket is part of NASA's Constellation program that, beginning in 2009, will be flying test flights with the goal of replacing the space shuttle for manned trips into outer space. (UPI Photo/Sean Smith/NASA)

This undated NASA image shows technicians working on the Launch Abort System (LAS) simulator of the Ares I-X in the NASA Langley hangar, in Hampton, Virginia. The Ares I-X rocket is part of NASA's Constellation program that, beginning in 2009, will be flying test flights with the goal of replacing the space shuttle for manned trips into outer space. (UPI Photo/Sean Smith/NASA)

This undated NASA image shows the Ares I-X Launch Abort System simulator as it is backed into the NASA Langley hangar, in Landley, Virginia. The Ares I-X rocket is part of NASA's Constellation program that, beginning in 2009, will be flying test flights with the goal of replacing the space shuttle for manned trips into outer space. (UPI Photo/Sean Smith/NASA)