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Earth-Moon Near Rectilinear Halo and Butterfly Orbits for Lunar Surface Exploration

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  • Author: Ryan J. Whitley, Diane C. Davis y, Laura M. Burke, Brian P. McCarthy, Rolfe J. Power, Melissa L. McGuire, Kathleen C. Howell
NASA has proposed the Gateway1 concept as a testing ground for deep-space technologies, a staging point for missions beyond cislunar space, and a platform for Earth, lunar and space science. Currently, assembly of the Gateway components is expected to occur on orbit; tended by crew transported to the Gateway via the Orion spacecraft. Careful selection of orbit architecture is required to ensure that constraints are met while fulfilling the goals of the Gateway mission.2 One objective of the Gateway is to serve as a staging post for lunar surface access, both for crewed and robotic applications. With the capability to stage crewed missions, the Gateway will support the return of humans to the surface of the Moon, a NASA objective outlined recently in Space Policy Directive 1.3
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