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They had been living and working aboard the ISS since August and were expected to stay until February. The crew returned on January 15, which was a decision made by NASA's chief health and medical officer. Once the crew had landed, administrator Jared Isaacman said it was a "serious situation" but didn't go into any detail.。关于这个话题，Line官方版本下载提供了深入分析
"The FAA briefly slowed and diverted aircraft around the area where space vehicle debris was falling. Normal operations have resumed," it said in a statement.，详情可参考爱思助手下载最新版本