The Obama Administration proposed a revision of Constellation in 2010 to focus on the development of the capability for crewed missions beyond مدار أرضي منخفض (LEO), envisioning extending the operation of the محطة الفضاء الدولية beyond 2020, transferring the development of launch vehicles for human crews from ناسا to the private sector, and developing technology to enable missions to beyond LEO, such as نقاط لاغرانج, the Moon, نقاط لاغرانج, near-Earth asteroids, and فوبوس or Mars orbit.