Artemis III is planned as a crewed test flight in Earth orbit to demonstrate systems and operations required for future lunar landing missions planned from Artemis IV onwards.

During Artemis III, the agency's SLS (Space Launch System) rocket will launch the Orion spacecraft and its crew from NASA's Kennedy Space Center in Florida to low Earth orbit. After Orion systems checkouts, the spacecraft will, for the first time, demonstrate rendezvous and docking capabilities with test versions from one, or both, American commercial human landing systems in development by Blue Origin and SpaceX. This highly choreographed mission includes a dramatic multi-launch campaign of the world's most powerful rockets, testing integrated hardware between Orion and the landers, including system interfaces, software, propulsion, and communications.
Artemis III includes launching the world's most powerful rockets in short order. Blue Origin's lander pathfinder, which is able to stay in orbit for multiple weeks, will launch first and await the crew. NASA will send the astronauts aboard Orion by SLS to orbit Earth, before rendezvousing in space with the company's lander test article and spending about two days docked together for tests and technology demonstrations, including entering the lander.
After completing docked operations with Blue Origin, Orion will detach and await Starship.SpaceX's Starship pathfinder will launch and meet up with Orion to spend about a day connected for checkouts and testing. After that, Orion and its crew will undock and return home, splashing safely down in the Pacific Ocean where a team from the U.S. Navy and NASA will recover the astronauts.