The Challenger and the Columbia: The History of the Space Shuttles that Suffered Disasters

On the morning of January 28, 1986, the Space Shuttle Challenger launched for the 10th time, beginning mission STS-51-L. Space shuttles had already successfully completed 24 missions, and no American spacecraft had ever failed to reach orbit during an official mission. On this mission, the Challenger was carrying a satellite for the Tracking and Data Relay Satellites system, which was to be deployed in orbit. The crew included Ronald McNair, who had already been the second African-American in space, and Ellison Onizuka, who had already been the first Asian-American astronaut in space. But the highlight of the mission was to be the “NASA Teacher in Space Project,” in which a civilian teacher would give teaching lessons to his or her class while onboard the space shuttle. The winner of the competition was Christa McAuliffe, a high school teacher in Concord, New Hampshire, who wrote a winning essay and had to undergo a year of astronaut training before that fateful day.It was a beautiful morning, and many spectators came to the Kennedy Space Center to watch the launch, including McAuliffe’s parents and her students. Several news networks were carrying live broadcasts of the launch, including live shots of McAuliffe’s parents as they watched the Challenger liftoff. Mission Control’s transmissions to the Challenger were being blared over loudspeakers to give spectators a play-by-play of the shuttle’s ascent.Ascent seemed to be going normally during the first minute, but about 75 seconds into the ascent, a plastic O-ring used to seal a joint in one of the solid rocket boosters failed, causing a breach of hot gas. That gas spread to the other rocket booster and the external fuel tank, causing an explosion. When the spectators saw the explosion, many of them started cheering, unaware of what was really happening. But Mission Control quickly announced that there had been some sort of problem, and the crowd became confused and then panicky as the space shuttle, fuel tank and rocket boosters all broke apart and flew in opposite directions. Some cameras fixed on the falling debris as it fell to the ocean, while others stayed focused on McAuliffe’s parents.The notorious date of the Challenger disaster was commemorated by the crew of the Columbia while they were in space in 2003, and a few days later, on February 1, the Columbia was due to land at the Kennedy Space Center in Florida at 09:16. Only a few members of the press were present to watch the landing - this was, after all, supposed to be a routine return from a routine mission, the 113th for the shuttle program and the 28th for Columbia, one of the oldest Space Shuttles.At 08:59, 17 minutes before it was scheduled to land, Columbia was passing over Texas 37 miles above the ground and reentering the atmosphere. Mission Control was discussing a landing gear tire pressure issue with Mission Commander Rick Husband when radio transmission from the shuttle abruptly ceased. Multiple sensors on the craft relaying real-time information back to Mission Control also stopped sending signals. On a large screen, the moving red triangle representing the shuttle’s current position flickered and then disappeared over central Texas. There was clearly a major problem, and within hours, it would become clear that Columbia had disintegrated over Central Texas, scattering debris and the remains of the seven people aboard over thousands of square miles of east Texas and southern Louisiana.The attempt to recover the debris and find the remains of the seven astronauts became the biggest land search ever carried out. At the same time, recovering the wreckage was vital to figure out exactly what happened. Over 20 years later, the choices made, the mission, and the findings of the investigations remain controversial. Read more