the shuttle program you mentioned above; what is it about?
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where does the us launch space shuttles from Kennedy Space Center (KSC) in Florida. what are these shuttles actually? It was a partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. when does its crew comprised of? The Space Shuttle crew varied by mission. The test flights only had two members each, the commander and pilot. The on-orbit operations were conducted primarily by the mission specialists. did it ever face any disaster? On January 28, 1986, STS-51-L disintegrated 73 seconds after launch, due to the failure of the right SRB, killing all seven astronauts on board "Challenger".
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Space Shuttle [SEP] Disasters
On January 28, 1986, STS-51-L disintegrated 73 seconds after launch, due to the failure of the right SRB, killing all seven astronauts on board "Challenger". The disaster was caused by low-temperature impairment of an O-ring, a mission-critical seal used between segments of the SRB casing. Failure of the O-ring allowed hot combustion gases to escape from between the booster sections and burn through the adjacent ET, leading to a sequence of events which caused the orbiter to disintegrate. Repeated warnings from design engineers voicing concerns about the lack of evidence of the O-rings' safety when the temperature was below 53 °F (12 °C) had been ignored by NASA managers.