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Science2mo ago

Artemis II Astronauts Set to Return to Earth, Watch as Spacecraft Re-enters Atmosphere and Splashes Down in Pacific

NASA’s Orion spacecraft is about to bring four Artemis II astronauts back to Earth after completing a nine-day crewed lunar flyby mission. The mission set a new record for the farthest distance humans have traveled from Earth, marking a key step forward in the U.S. return to the Moon plan.

According to the plan, the Orion spacecraft will splash down in the Pacific Ocean near San Diego, California, after completing a high-speed re-entry into the atmosphere, expected at 5:07 PM Pacific Time (8:07 PM Eastern Time).

After splashdown, the U.S. Navy recovery forces will be responsible for transferring the spacecraft and astronauts to the amphibious assault ship USS John P. Murtha, where the astronauts will undergo initial medical examinations and assessments before being transported back to land by helicopter.

The four astronauts who carried out the Artemis II mission are Mission Commander Reid Wiseman, Pilot Victor Glover, Mission Specialist Christina Koch, and Canadian Space Agency astronaut and Mission Specialist Jeremy Hansen.

The four flew the Orion spacecraft over the far side of the Moon, comprehensively tested the crewed systems in the deep space environment, and validated key technologies and procedures for subsequent lunar landing missions.

According to NASA’s assessment, the re-entry phase has always been considered the riskiest part of crewed spaceflight, and for Artemis II, this phase is particularly risky due to known design issues with the Orion spacecraft’s heat shield.

The heat shield is a critical component that protects astronauts from the intense heat of re-entry, but during the uncrewed Artemis I test flight in 2022, the heat shield experienced unexpected damage, which was later identified as a design flaw.

This crewed return will be the first rigorous test of the improved reliability of the heat shield and is also seen by outsiders as a critical juncture in the success or failure of the Artemis program.

The public can watch the splashdown of the Artemis II mission in real-time through various channels.

NASA will broadcast the entire process live on its official YouTube channel, with footage expected to cover the critical phases of re-entry, parachute deployment, and spacecraft splashdown.

In addition, major U.S. television news channels, Netflix and other streaming platforms, as well as other partner platforms listed in NASA’s official blog links, will begin broadcasting related live broadcasts and special programs starting at 6:30 PM Eastern Time.

In the Artemis program, Artemis II is the first crewed lunar flyby mission following the uncrewed test flight Artemis I, aiming to verify the overall performance and safety of the SLS heavy-lift launch vehicle and the Orion spacecraft in a crewed state without attempting a lunar landing.

If this return to Earth and the critical phase of re-entry are completed successfully, it will lay the foundation for subsequent plans to implement crewed lunar flybys, lunar landings, and the establishment of a long-term presence on the Moon.