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NASA Commercial Crew Program

Since 2010, CCP has progressed through several phases of development, with NASA awarding funded and unfunded development activities for commercial crew transportation capabilities to eight companies for a total of $8.5 billion. Boeing SpaceX Sierra Nevada OTHER TOTAL...

Near Rectilinear Halo Orbit

NRHOs comprise a subset of the halo families of orbits in the Earth-Moon system, characterized by close passages of the Moon and nearly stable behavior. The NRHO is a highly inclined orbit around the moon and is considered to be in cislunar space. Cislunar is Latin...

NextSTEP

NextSTEP Overview NextSTEP is a public-private partnership model that seeks commercial development of deep space exploration capabilities to support more extensive human spaceflight missions in and beyond cislunar space—the space near...