美拟将载人绕月飞行任务火箭和飞船撤回装配大楼

Core Viewpoint - NASA has announced a delay in the Artemis II mission due to technical issues identified during a comprehensive rehearsal, necessitating the return of the rocket and spacecraft to the assembly building for troubleshooting and repairs [1][2]. Group 1: Mission Details - The Artemis II mission aims to send four astronauts on a lunar orbit flight using the Space Launch System (SLS) rocket and Orion spacecraft [1]. - The mission was initially scheduled for February but has faced multiple delays due to technical problems encountered during rehearsals [1]. Group 2: Technical Issues - A disruption in the flow of helium to the rocket's transitional low-temperature propulsion stage was identified during the rehearsal process [1]. - NASA stated that the return of the rocket and spacecraft to the assembly building at Kennedy Space Center is a necessary step to determine the cause of the issue and implement repairs [1]. Group 3: Future Plans - The return process will cover approximately 6.4 kilometers and is expected to take several hours [1]. - If preparations are expedited and the issues are resolved quickly, there is a possibility of retaining the April launch window, although the final schedule will depend on data analysis and repair progress [1].