美国国家航空航天局（NASA）在修复了危险的燃料泄漏问题后，于当地时间周二再次启动了数十年来首次载人登月任务的发射倒计时演练。此前的泄漏已将飞行任务推迟至3月。
两周前的首次燃料加注测试因液氢泄漏被迫中止，这类泄漏正是三年前阿尔忒弥斯1号无人试飞时中断任务的同一问题。
发射团队在肯尼迪航天中心发射台更换了两组密封件和一个堵塞的过滤器，随后重新启动倒计时。这座巨型登月火箭便矗立在此。这场为期两天的测试将于周四达到关键节点——尝试为火箭燃料箱完全加注。阿尔忒弥斯2号的四名宇航员将远程监控这次重要的全流程彩排。
NASA必须先完成一次无泄漏的成功测试，才会确定正式发射日期。太空发射系统（SLS）火箭最早可能于3月6日升空。官员们曾考虑提前三天，但表示需要额外时间分析燃料测试数据。
据报道，NASA上一次送宇航员登月，还是在1972年的阿波罗计划期间。
责任编辑：陈钰嘉
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