On the morning of January 28, 1986, Space Shuttle Challenger lifted off from Kennedy Space Center in Florida. Seventy-three seconds later, it was gone. The orbiter broke apart over the Atlantic Ocean, killing all seven people on board — five NASA astronauts and two payload specialists. It remains one of the most witnessed disasters in American history.
The crew was led by Commander Francis “Dick” Scobee, with Pilot Michael Smith at his side. Mission Specialists Ellison Onizuka, Judith Resnik, and Ronald McNair rounded out the NASA crew. Payload Specialist Gregory Jarvis and teacher Christa McAuliffe completed the seven-person team.
Challenger was no stranger to the skies. The orbiter had been part of the shuttle fleet for years before its final mission, arriving at Kennedy Space Center in the summer of 1982 and completing multiple successful flights.
Much of the public attention surrounding this particular mission centered on Christa McAuliffe, a high school social studies teacher from Concord, New Hampshire. She was selected from more than 11,000 applicants to become the first teacher to fly in space. Her inclusion in the crew drew enormous media coverage and brought millions of schoolchildren to their televisions on launch day.
The day before the launch, the crew walked out of their quarters headed for the pad in good spirits. What awaited them the next morning was a launch site coated in ice — the result of overnight temperatures far below what the shuttle’s components were designed to tolerate.
The cold proved fatal. The O-ring seals in the right-hand solid rocket booster’s aft field joint failed in the freezing conditions. Hot pressurized gas from the solid rocket motor escaped through the breach, burning through the external fuel tank’s attachment hardware. The right-hand booster’s aft joint separated from the external tank, causing structural failure. Aerodynamic forces tore the orbiter apart seconds later.
At nine miles above the Atlantic Ocean, Challenger exploded. The two solid rocket boosters separated from the fireball and continued flying for another 37 seconds before NASA flight controllers remotely deactivated them.
Roughly 17 percent of all Americans watched the launch live on television, a figure driven largely by McAuliffe’s participation. Schools across the country had tuned in specifically to watch a teacher go to space. Within an hour of the explosion, 85 percent of Americans had already heard the news. The reaction was immediate and visceral — at the launch site, in schools, and in living rooms nationwide.
McAuliffe’s hometown of Concord, New Hampshire, felt the loss with particular intensity. Memorial services drew crowds of grieving residents, including children who had followed her journey since she was first selected. The grief in Concord was raw and public.
Recovery operations began almost immediately. Salvage crews worked the waters off the Florida coast, pulling wreckage from the ocean floor to piece together the physical evidence of what had happened. The front section of the orbiter and components of the solid rocket boosters were among the pieces recovered.
President Ronald Reagan convened the Rogers Commission to investigate the accident. The panel’s findings pointed directly to the failed O-ring seals and the decision to launch in freezing temperatures despite internal warnings from engineers at Morton Thiokol, the company that built the solid rocket boosters. The shuttle program was grounded for 32 months while NASA worked to address the design and management failures the disaster exposed.
