NASA Administrator Jared Isaacman told lawmakers on Monday that SpaceX and Blue Origin, the agency's two lunar lander contractors, say they could have their spacecraft ready for the next Artemis mission in Earth orbit in late 2027, somewhat later than NASA's previous schedule.
This mission, Artemis III, will not fly to the Moon. Instead, NASA will launch an Orion capsule with a team of astronauts to rendezvous and potentially dock with one or both landers in Earth orbit. The details of the Artemis III flight plan remain under review, with key questions about the orbit's altitude and the configuration of the Space Launch System rocket still unanswered.
A mission to low-Earth orbit, just a few hundred miles in altitude, may not require NASA to use up an SLS upper stage that is already built and in storage, saving the unit for the following Artemis mission to attempt a landing on the Moon. A launch into a higher orbit would require the upper stage, but it would allow NASA to perform tests in an environment more similar to the Moon. NASA is buying a new commercial upper stage, the Centaur V from United Launch Alliance, to pair with the SLS rocket after flying the last of the rocket's existing upper stages.
