thescarypost on Instagram: "The Space Shuttle Challenger (STS‑51‑L) launched on January 28 1986 with seven crew members aboard: commander Francis “Dick” Scobee, pilot Michael J. Smith, mission specialists Ronald McNair, Ellison Onizuka, Gregory Jarvis, and Judith Resnik, and teacher‑in‑space Christa McAuliffe. Seventy‑three seconds after liftoff a faulty O‑ring in the right solid‑rocket booster caused a structural failure, leading to the vehicle’s breakup and the tragic loss of all seven astrona