Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Zera reSpace rakasvika pakakwirira zvikuru nepurogiramu yeApollo, iyo yakabata fungidziro yechikamu chikuru chavagari vapasi. Kumhara kweApollo 11 kwakaratidzwa nevanhu vanopfuura mamiriyoni 500 munyika yose uye kunozivikanwa zvikuru somumwe wenguva dzinokosha zvikuru dzezana ramakore rechi20. Kubvira ipapo, pfungwa dzevanhu dzakatamira kune dzimwe nzvimbo. MuUnited States, njodzi yeSpace Shuttle Challenger muna 1986 yakaratidza kuderera kukuru mukutangwa kweShuttle ine vanhu. Pashure penjodzi yacho, NASA yakamisa kufamba kwezvikepe zvose zveShuttle nokuda kwezvinetso zvokuchengeteka kutozosvikira muna 1988. Mukati mema1990 mari yezvirongwa zvine chokuita nenzvimbo yakaderera zvikuru sezvo zvivako zvakasara zveSoviet Union zvino zvakaparadzwa uye NASA yakanga isisinazve kukwikwidzana zvakananga.  Mubvunzo: Kubhadhara mari kweNASA kwakaderera zvikuru rini?
Makore ekuma1990