noun
Space Shuttle Challenger disaster; Challenger explosion
Refers specifically to the January 28, 1986 event. Used in news, historical, and technical contexts.
チャレンジャー爆発事故は1986年1月28日に発生した。
The Space Shuttle Challenger disaster occurred on January 28, 1986.
From English 'Challenger' plus Japanese 爆発事故 (explosion accident).