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在航天飞机的飞行历史上,有三次意义特别重大的飞行,分别是1981年4月“哥伦比亚号”的处女航,这是航天飞机首次进入太空;1986年“挑战者号”失事以及2003年“哥伦比亚号”惨剧的发生,使随后的两次复飞计划牵动人心。从某种意义上讲,这是两次承载人类航天前途的特殊飞行。巧合的是,在两次复飞中以“拯救者”姿态出场的,都是“发现号”航天飞机。“发现号”挽救的是美国航天大国的地位、美国公众的自信心,还有人类探索外太空的梦想和前途。
In the history of the shuttle’s flight, there were three particularly significant flights: the maiden flight of the “Columbia” in April 1981. This was the first time that the space shuttle had entered space; the “Challenger” crash in 1986 and Columbia in 2003. The occurrence of the tragedy caused the next two go-around plans to affect the people. In a sense, this is a special flight that carries the future of human space twice. Coincidentally, the “Savior” posture in the two go-arounds was the “Discovery” space shuttle. “Discovery” saved the position of the United States as a space power, the self-confidence of the American public, and the dream and future of human exploration of outer space.