NASA is preparing for a monumental step in space exploration with the Artemis II mission, representing humanity's first crewed flight to the Moon since 1972. This mission serves as a crucial practice run before future endeavors to establish a sustained presence on the lunar surface.

The Artemis II Mission Profile: A Swift Lunar Out-and-Back

The upcoming flight is designed as a fast, high-speed flyby, lasting less than 10 days in total. The four-person crew will not orbit or land on the Moon during this test flight.

Trajectory and Distance Goals

The plan involves hurtling several thousand miles past the Moon before executing a U-turn for a direct return to Earth. On flight day six, the Orion capsule is expected to sail approximately 5,000 miles beyond the Moon, setting a new distance record for human space travel, surpassing Apollo 13.

The mission utilizes a free-return trajectory, leveraging the gravitational pull of the Moon and Earth to conserve fuel, a technique famously employed during Apollo 13. The crew anticipates splashdown on flight day 10, roughly nine days, one hour, and 46 minutes after launch.

The Diverse and International Artemis II Crew

The crew consists of four astronauts from NASA and the Canadian Space Agency (CSA). Their ages range between 47 and 50 years old.

  • Reid Wiseman: The mission commander, a retired Navy captain who previously served aboard the International Space Station (ISS) in 2014 and headed NASA’s astronaut corps.
  • Victor Glover: A Navy test pilot who became the first Black astronaut to live and work on the ISS in 2020-2021 and launched with SpaceX.
  • Christina Koch: Holds the record for the longest single spaceflight by a woman (328 days) and participated in the first all-female spacewalk.
  • Jeremy Hansen: A former fighter pilot from the CSA, he is the only rookie astronaut among the four.

Technical Aspects: SLS Rocket and Orion Capsule

The mission relies on NASA’s Space Launch System (SLS) rocket, which stands 322 feet tall. While shorter than the Apollo-era Saturn V, the SLS is more powerful at liftoff due to its strap-on boosters.

The Orion capsule, carrying the crew, is constructed using components like salvaged space shuttle engines and uses liquid hydrogen fuel, similar to the shuttles. Hydrogen leaks previously grounded the shuttles and caused delays for the uncrewed SLS test flight in 2022.

Pre-Flight Maneuvers and Lunar Observation

Following liftoff, the first 25 hours will be spent orbiting Earth. During this time, the crew will practice docking procedures by maneuvering Orion around the separated upper stage, relying on visual judgment from a distance no closer than 33 feet.

The crew is eager to observe previously unseen regions of the lunar far side. NASA geologist Kelsey Young, monitoring from Houston, noted that the mission will bring the Moon closer to people globally. Administrator Jared Isaacman also ensured the astronauts carry the latest smartphones for capturing inspiring images.

Reentry and Recovery Procedures

Like the Apollo missions, Artemis II will conclude with a splashdown in the Pacific Ocean. A major focus will be on Orion’s heat shield, which sustained significant damage, with charred chunks gouged out during the 2022 test flight.

For Artemis II, the heat shield remains the original design, though NASA is shortening the atmospheric descent to limit heat exposure. Navy recovery ships will be positioned off the coast of San Diego to retrieve the Orion capsule as it parachutes into the ocean.