Astronaut John Glenn enters the Mercury spacecraft, Friendship 7, prior to the launch of Mercury-Atlas 6 (MA-6) on Feb. 20, 1962. The MA-6 mission was the first crewed orbital flight and Glenn became the first American to orbit the Earth during the three-orbit, five-hour MA-6 mission.
Image Credit: NASA
1962年2月20日，在水星阿特拉斯6号（MA-6）发射之前，宇航员约翰·格伦进入水星飞船友谊7号。MA-6任务是第一次载人轨道飞行，格伦成为第一个在MA-6任务期间绕地球三圈飞行的美国人。
影像来源：NASA
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