末日倒数 地_球大撤退

　　If we f ace\d; a /,_`countdown to destruction, could we bu+!ild a: sp-).acecraft to take us to new(* a.nd habit_/able w!:orlds? ^ C$(an ;??we :_$[Eva_:cuate, Earth? NGC]&
#3
9s two-hour special exa.mines=^-# t
!hi$?s terrifying but^[ scient- $[ifical/*ly plausible scen-ar.!io by explori =!ng how we coul: d %[$=unite t/o e@@^nsure _,the surv:@ival of th+e human race.