NASA Prepares Artemis II for Rollout After Tests
Following the resolution of helium flow issues, NASA is preparing to roll out its Artemis II Space Launch System rocket to the launch pad as early as February 24. The agency recently completed a critical wet dress rehearsal, fueling the rocket with 730,000 gallons of propellant after fixing seal issues. NASA also announced it is targeting a rollback of the vehicle later in the week.
- The Artemis II mission will be the first crewed flight of the Space Launch System (SLS) rocket and Orion spacecraft, carrying four astronauts on a lunar flyby. The crew includes NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen. - This 10-day mission will follow a free-return trajectory, using the Moon's gravity to loop the Orion spacecraft back to Earth without requiring a major propulsion burn for the return journey. The flight path will take the crew farther from Earth than any previous human mission. - Unlike the Apollo missions which entered lunar orbit, Artemis II will conduct a flyby, passing approximately 4,600 miles (7,400 kilometers) beyond the far side of the Moon. This trajectory allows for testing of Orion's life support, navigation, and communication systems in a deep space environment. - The SLS Block 1 rocket configuration used for Artemis II stands 322 feet tall and produces 8.8 million pounds of thrust at liftoff, 15% more than the Saturn V rocket. It utilizes two five-segment solid rocket boosters and four RS-25 engines, which are upgraded Space Shuttle main engines. - A key difference from the uncrewed Artemis I mission is the full integration of the life support systems on the Orion spacecraft, which is provided by the European Service Module (ESM). The ESM supplies the crew with power, propulsion, thermal control, air, and water. - The mission plan includes an initial high Earth orbit to check out spacecraft systems before the trans-lunar injection burn. During this phase, the crew will manually pilot the Orion spacecraft, using the spent Interim Cryogenic Propulsion Stage (ICPS) as a target to test rendezvous and proximity operations capabilities. - Delays to the launch, now targeting April 2026 at the earliest, have been caused by several technical issues, including investigations into unexpected heat shield damage on Artemis I and, more recently, problems with helium flow to the rocket's upper stage. - The crew selection marks several milestones: Victor Glover will be the first person of color, Christina Koch the first woman, and Jeremy Hansen the first non-American to travel on a lunar mission.
