Spacecraft assembled and provisioned on the moon could escape its far lower gravity using far less energy, and thus, far less cost.Also, the moon is home to abundant resources.

• 然而，如果能够在月球上完成宇宙飞船的组装以及升空准备，那么，飞船只需消耗小得多的能量便能够脱离月球小得多的重力，从而大幅度降低成本。