Siyini isinyathelo sokugcina ngaphambi kokuba inkanyezi iwele emgodini omnyama?
Izinkanyezi ezinesisindo esingaphezu kwesisindo selanga esingaba ngu-2,2 (isisindo selanga lethu) ngokuvamile ziyowa zibe izimbobo ezimnyama ekupheleni komjikelezo wazo wokuphila lapho ukuhlangana sekuyekile futhi kungasaphumi ngokumelene namandla adonsela phansi. Ezinkanyezini ezinobunzima obunjalo, amandla adonsela phansi angaphakathi aqine kakhulu ukuba angamelana namanye amandla, ngakho isiphetho sazo ukuba zibe izimbobo ezimnyama. Nokho, izinkanyezi ezingaphansi kwalomkhawulo nangaphezulu komkhawulo kaChandrasekhar ongu-1.4 wezinkanyezi zelanga ziyoqeda umjikelezo wazo wokuphila njengezinkanyezi zama-neutron. Izinkanyezi zama-neutron nazo ziyizinsalela zezinkanyezi ezifile kodwa njengoba zinesisindo esincane, amandla azo adonsela phansi awanele ukuba zingene zibe izimbobo ezimnyama. Njengoba inkanyezi efile icindezela futhi iba nkulu ngokwengeziwe, izinto ezivamile ziguqulwa zibe ama-neutron futhi amandla okugcina okumelana nokuheha kwamandla adonsela phansi abizwa ngokuthi ingcindezi yama-neutron ewohlokayo, okuwumphumela we-quantum onquma ukuthi awekho ama-neutron amabili angafana nesimo esifanayo se-quantum. Lokhu kudala ingcindezi engaphandle emelana namandla adonsela phansi bese kuqinisa inkanyezi ibe inkanyezi yama-neutron. Uma kunezelwa isisindo esengeziwe kamuva, esivela enkanyezini engumngane noma kweminye imithombo, lapho isisindo senkanyezi sesidlulile emngceleni ongaba ngu-2.2 wemisa yelanga ngisho nokuwohloka kwengcindezi yama-neutron akwanele ukulinganisela amandla adonsela phansi futhi inkanyezi iyowa ibe umgodi omnyama.