<prompt> I-Voyager 2 kwaba umkhumbi-mkhathi wokuqala ukuhlola ubuso be-Enceladus ngokuningiliziwe, ngo-Agasti 1981. Ukuhlolwa kwezithombe eziphezulu kakhulu ze-terrain eziveziwe namuhla kuveze okungenani izinhlobo ezinhlanu ezahlukene zendawo, kufaka phakathi izifunda eziningana zendawo ene-crater, izifunda zendawo ebushelelezi entsha, kanye nemigwaqo yendawo enemifantu evame ukukhawulela izindawo ezibushelelezi. Ngaphezu kwalokho, kwaqashelwa imifantu eminingi eqondile kanye nemifudlana emincane. Njengoba kunikezwe ukuntuleka okuhlobene kwemigodi emathafeni abushelelezi, lezi zifunda kungenzeka zingaphansi kweminyaka eyizigidi ezingamakhulu ambalwa ubudala. Ngokusho kwalokhu, i-Enceladus kumele ukuthi isanda kusebenza nge volcanism yamanzi noma ezinye izinqubo ezivuselela ubuso.  <response>: eduze nenkabazwe 