NASA's Artemis III mission will launch no earlier than late 2027, according to NASA Administrator Jared Isaacman. The mission will not fly to the Moon but will instead be launched from an Orion capsule with astronauts to rendezvous and potentially dock with one or both landers in Earth orbit. Key questions regarding the orbit's altitude and the configuration of the Space Launch System rocket remain unanswered. The agency is also considering adding a new commercial upper stage, the Centaur V from United Launch Alliance, to its partnership with the SLS rocket after flying the last of the rocket's existing upper stages.