美国拟将载人绕月飞行任务火箭和飞船撤回装配大楼

Core Points - NASA announced a delay in the Artemis 2 mission due to technical issues identified during a comprehensive rehearsal, with plans to return the rocket and spacecraft to the assembly building for troubleshooting and repairs [1] - The Artemis 2 mission aims to send four astronauts on a lunar orbit flight using the Space Launch System rocket and Orion spacecraft, following the successful Artemis 1 unmanned mission in November 2022 [2] Group 1 - The return of the rocket and spacecraft to the assembly building is necessary to identify the cause of the helium gas interruption affecting the rocket's transitional low-temperature propulsion stage [1] - The transportation process covers approximately 6.4 kilometers and is expected to take several hours, with the potential to retain the April launch window if preparations are expedited and issues are resolved [1] - The Artemis 2 mission was initially scheduled for February but has faced multiple delays due to technical problems encountered during rehearsals [1] Group 2 - The Artemis program was announced by the U.S. in 2019, with the Artemis 1 mission serving as a precursor to the upcoming Artemis 2 crewed lunar mission [2] - Following the completion of Artemis 2, NASA plans to advance the implementation of the Artemis 3 crewed lunar landing mission [2]