, ▁Disc overy , ▁Atl ant is , ▁and ▁Ende av our . ▁The ▁Ende av our ▁was ▁built ▁to ▁replace ▁the ▁Ch allen ger , ▁which ▁was ▁lost ▁in ▁January ▁ 1 9 8 6 . ▁The ▁Columbia ▁broke ▁up ▁during ▁re entry ▁in ▁February ▁ 2 0 0 3 . ▁ ▁The ▁first ▁automatic ▁partially ▁re usable ▁space craft ▁was ▁the ▁Bur an ▁( S now st orm ), ▁launched ▁by ▁the ▁USS R ▁on ▁ 1 5 ▁November ▁ 1 9 8 8 , ▁although ▁it ▁made ▁only ▁one ▁flight . ▁This ▁space plane ▁was ▁designed ▁for ▁a ▁crew ▁and ▁strongly ▁res emble d ▁the ▁US ▁Space ▁Sh utt le , ▁although ▁its ▁drop - off ▁boost ers ▁used ▁liquid ▁prop ell ants ▁and ▁its ▁main ▁engines ▁were ▁located ▁at ▁the ▁base ▁of ▁what ▁would ▁be ▁the ▁external ▁tank ▁in ▁the ▁American ▁Sh utt le . ▁L ack ▁of ▁fund ing , ▁complicated ▁by ▁the ▁dissol ution ▁of ▁the ▁USS R , ▁prevent ed ▁any ▁further ▁fl ights ▁of ▁Bur an . ▁ ▁The ▁Space ▁Sh utt le ▁was ▁retired ▁in ▁ 2 0 1 1 ▁due ▁mainly ▁to ▁its ▁old ▁age ▁and ▁high ▁cost ▁of ▁the ▁program ▁reaching ▁over ▁a ▁billion ▁dollars ▁per ▁flight . ▁The ▁Sh utt le ' s ▁human ▁transport ▁role ▁is ▁to ▁be ▁replaced ▁by ▁the ▁Dragon ▁ 2 ▁and ▁C ST - 1 0 0 ▁in ▁ 2 0 2 0 s . ▁The ▁Sh utt le ' s ▁heavy ▁cargo ▁transport ▁role ▁is