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今年2月1日，美国哥伦比亚号航天飞机在返回大气层时失事，七名航天员全部罹难，噩耗传来，举世震惊。 “哥伦比亚”号是美国最老资格的航天飞机，1981年4月12日首次升空，迄今已经执行了28次飞行任务。根据设计，每架航天飞机能飞行100次，哥伦比亚号在投入使用后曾在19
On February 1 this year, the space shuttle Columbia lost its way back to the atmosphere, and all seven astronauts were killed and bad news came. The world was shocked. The “Colombia” is the oldest space shuttle in the United States. It was first launched on April 12, 1981. So far, it has performed 28 missions. According to the design, each space shuttle can fly 100 times and the Columbia number was 19 after it was put into use.