Kufamba: Zera reNzvimbo rakasvika pakakwirira nehurongwa hweApollo, iyo yakabata fungidziro yevakawanda vevagari vepasi. Kumhara kweApollo 11 kwakatariswa nevanhu vanopfuura mamirioni mazana mashanu pasirese uye kunozivikanwa zvakanyanya seimwe yenguva dzinotsanangura yezana ramakore rechi20. Kubvira ipapo, kutarisisa kwevanhu kwave kwakanyanya kuenda kune dzimwe nzvimbo.MuUnited States, njodzi yeSpace Shuttle Challenger muna 1986 yakaratidza kuderera kukuru mukumiswa kweShuttle. Kutevera njodzi, NASA yakamisa Shuttle dzese nekuda kwekunetseka kwekuchengetedza kusvika 1988. Munguva ye1990s mari yezvirongwa zvine chekuita nenzvimbo yakadonha zvakanyanya sezvo zvivakwa zvakasara zveSoviet Union zvakaputswa uye NASA yakanga isisina kukwikwikwidzana zvakananga. Mubvunzo: Mari yeNASA yakadzikira riini zvakanyanya?
Makore ekuma1990