<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Ukudlula: Izithombe ezithathwe iCassini ngesikhathi indiza phezu kwayo ngo-July 14, 2005, zembula isifunda esihlukile, esiguquguqukayo ngokobukhulu bomhlaba esizungeze isigxobo esiseningizimu se-Enceladus. Le ndawo, efinyelela enyakatho ekude njenge-60 latitude eningizimu, imbozwe ama-tectonic fractures nama-ridges. Le ndawo inemigodi embalwa emikhulu, okusikisela ukuthi yindawo encane kunazo zonke e-Enceladus nakunoma yiziphi iziphuphutheki ezinobukhulu obuphakathi; ukumodeliswa kwesilinganiso se-cratering kusikisela ukuthi ezinye izifunda zendawo eseningizimu ye-polar kungenzeka ukuthi zineminyaka engama-500,000 ubudala noma ngaphansi. Eduze nesikhungo salesi sifunda kunemifantu emine eboshwe amagquma, ngokungahleliwe abizwa ngokuthi imigqa yezingwe. Kubukeka sengathi yizinto ezincane kunazo zonke kule ndawo futhi zizungezwe yi-mint-green-colored ngombala ongelona iqiniso, i-UV green eduze nezithombe ze-IR, iqhwa lamanzi elinama-coarse-grained, elibonwe kwenye indawo ebusweni ngaphakathi kwama-outcrops nezindonga zokuqhekeka. Lapha iqhwa eliluhlaza okwesibhakabhaka lisendaweni eyisicaba, okubonisa ukuthi le ndawo isencane ngokwanele ukuba ingahlanganiswa yiqhwa lamanzi elinamagilebhisi amancane elivela eringini elithi E. Imiphumela etholwe yi-visual and infrared spectrometer i-VIMS ibonisa ukuthi izinto ezinombala oluhlaza ezungeze imigqa yezingwe zihlukile ngokwamakhemikhali kwezinye izingxenye zomhlaba we-Enceladus. I-VIMS yathola iqhwa lamanzi eliyi-crystalline emigqeni, okusikisela ukuthi isencane kakhulu mhlawumbe ingaphansi kweminyaka engu-1 000 ubudala noma iqhwa elingaphezulu liye lashintshwa ukushisa esikhathini esedlule. I-VIMS yabuye yathola izinto eziphilayo ezilula eziqukethe ikhabhoni emigqeni yezingwe, amakhemikhali angatholakali kwenye indawo e-Enceladus kuze kube manje. Futhi ngo-27 Juni 2018, ososayensi babika ukutholakala kwezinto eziyinkimbinkimbi ze-macromolecular organic ku-Enceladus jet plumes, njengoba kuthathwe amasampula yi-Cassini orbiter. Enye yalezi zindawo zeqhwa eliluhlaza okwesibhakabhaka esifundeni esiseningizimu ye-polar yabonwa ngokulungiswa okuphezulu ngesikhathi sokundiza kukaJulayi 14, 2005, okwembula indawo yokuguquguquka okukhulu kwe-tectonic kanye nendawo enamabhulokhi, enezindawo ezithile ezihlanganiswe ngamadwala ayi-10 100 m ububanzi. Umbuzo: Izithombe zenkabazwe eseningizimu ye - Enceladus zathathwa ngamuphi unyaka?  <response>: Unyaka ka-2005 