7月26日电，美国航空航天局（NASA）发言人表示，出于对任务安全的担忧，大约20%的员工将离开本机构，作为“精简和提高效率”的整体努力的一部分。

Core Points - NASA is planning to reduce its workforce by approximately 20% due to safety concerns related to its missions [1] - This workforce reduction is part of a broader initiative aimed at streamlining operations and improving efficiency within the agency [1]