The morning of January 28, 1986, was supposed to be a historic moment for NASA's Space Shuttle program, but it turned into a devastating tragedy. Christa McAuliffe, a member of the Teacher in Space Project, was on board, along with six other brave astronauts, including Francis "Dick" Scobee, Michael J. Smith, Judith A. Resnik, Ellison Onizuka, Ronald E. McNair, and Gregory Jarvis. Just 73 seconds into the STS-51-L mission, a faulty O-ring in one of the solid rocket boosters failed, causing a catastrophic explosion that shattered the Challenger, sending debris plummeting into the Atlantic Ocean. The nation watched in horror as the tragedy unfolded, leaving a lasting impact on the space program and the families of the lost heroes.