The Ares V rocket is part of NASAs Constellation Program, which is the plan for human space exploration in the 21st century. Unlike the Ares 1-X, which is designed to lift heavy loads into Earth orbit, the Ares IV is designed to take loads to the moon or Mars. | The Ares V rocket is part of NASAs Constellation Program, which is the plan for human space exploration in the 21st century. Unlike the Ares 1-X, which is designed to lift heavy loads into Earth orbit, the Ares IV is designed to take loads to the moon or Mars. |