Engineers designing NASA’s next moon rocket denied that the human space flight program dubbed “Constellation” is too expensive, too risky and would unnecessarily delay man’s return to space. The engineers defended their work to a committee appointed by President Barack Obama to review what’s planned once the current shuttle program is retired. The head of the office that has spent four years designing the next U.S. rocket, called “Ares,” told members of the committee that the current design was the safest, fastest way to get Americans back to space.
