Duniya halitta ce daga cikin dinbin duniyoyin dake cikin sararin subuhana. Hakika wannan duniya da muke ciki yar karama ce idan aka kwatantata da duniyar Jupiter duniyar da muke ciki itace ta uku tsakaninta da Rana daga cikin abinda ake kira da turanci solar system. Kuma ita kadai ce a yanzu dai aka samu halitta mai rai a cikinta. Ita kadaice koramu da Teku ke gudu a doronta amma sauran duniyoyin ko Iska babu a cikinsu, balle har akai ga samun abu mai rai.