6、dinTonga。The companypromisesapackage thatincludes forty-fivedaysofastronauttraininginRussiaandCalifornia,sevendaysinspace,and a vacationinTonga,for$2 million。However, spaceflight isstillvery dangerous. Bill ReaddyisNASA'sdeputyassistantadministratorfor space flig
7、ht. Hesaysthatthechances of dyingareabout1 in 500.Becauseofthis,itmaytaketimebeforespacetourismreally takesoff。You mightbe abletogoup,but willyoucomedown?造访太空美国的百万富豪DennisTito将永远留名.他是第一位太空游客。他解释道:"我在地球上度过了60年,在太空度过了8天。在我看来,这是两种完全不同的生活."他热爱在太空的日子。"身处太空,回看地球是一个人所能拥