美国航天飞机“挑战者号”于1986年1月28日美国东部时间11时38分,从卡纳维拉尔角肯尼迪航天中心发射。起飞后73秒钟,发生意外爆炸,机上七名宇航员全部遇难。这是载人航天25年来发生的最惨重的一次灾难。也是美国继1967年1月“阿波罗”三名宇航员在地面试验时遇难的第二次。 1983年4月4日“挑战者号”首次飞行,这次飞行是它的第10次飞行,也是美国航天飞机的第25次飞行,也是美国第55次载人航天飞 The U.S. Space Shuttle Challenger was launched at 11.38 a.F. EDT on January 28, 1986, from the Kennedy Space Center in Cape Canaveral. 73 seconds after takeoff, an accidental explosion occurred, killing all seven astronauts on board. This is the worst disaster in 25 years of manned space flight. It is also the second time that the United States has been killed by three astronauts in Apollo on the ground in January 1967. April 4, 1983 “Challenger” first flight, the flight is its 10th flight, is the 25th flight of the United States Space Shuttle, is also the United States 55th manned space flight