ばくはつじこ チャレンジャー爆発事故 LinksSentence search for チャレンジャー爆発事故Sentence search for チャレンジャーばくはつじこKanji details for 爆, 発, 事 and 故Edit in JMdict Noun1. explosion of the Space Shuttle Challenger (January 28, 1986); Space Shuttle Challenger disasterEvent Discussions Log in to talk about this word.