<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Ukudlula: Ngenkathi enza umsebenzi wokuthweswa iziqu eNyuvesi yaseSouth Dakota State ngo-1986, uDkt. Mardon wamenywa ukuba abe yilungu lohambo lwe-Antarctic meteorite lwango-1986-87 lwe-NASA ne-National Science Foundation. Amamayela angu-170 ukusuka esiteshini saseNingizimu Pole lapho iqembu lakhe lithola amakhulu ama-meteorite. Phakathi nokuhlala kwakhe lapho wabhekana nokuchayeka emvelweni okwalimaza amaphaphu akhe futhi kwamenza wakhwehlela unomphela. Wathola i-US Congress Antarctic Service Medal ngemizamo yakhe kanye nobungozi. Ekubuyeni kwakhe e-Alberta, wanikeza izinkulumo e-Antarctica e-University of Calgary nase-University of Lethbridge. Waqinisekisa ingxoxo yokuba yilungu le-Canadian Soviet Arctic traverse kusuka enyakatho yeSiberia kuya e-Ellesmere Island e-Canadian Arctic, kodwa wehluleka ukungena kulowo mkhankaso. Wayeyingxenye yomkhankaso wokubuyisa imeteorite ehlulekile e-Canadian Arctic eduze ne-Resolute e-Northwest Territories, futhi wabhala iphepha ezingxoxweni zakhe nabantu bendawo nokuthi ama-Inuit ayecabangani ngemeteorite. Kwakumelwe futhi ahlanganyele ohambweni lwase-Argentina e-Antarctic ngasekupheleni kwawo-1980, kodwa umlilo esikhungweni sase-Argentina e-Antarctic wenza ukuba ubulungu bakhe bukhanselwe. Omunye weminikelo yakhe ebaluleke kakhulu kwisayensi yezinkanyezi uchungechunge lwezihloko azibhala kuyi-Anglo-Saxon Chronicle. I-Chronicle iyinkulumo eqhubekayo ngezenzakalo ezihlukahlukene eNgilandi phakathi nenkathi ephakathi. Ngosizo lukayise, isazi seminyaka ephakathi, uDkt. Mardon wathola izehlakalo eziyishumi nanye zezinkanyezi ezikhulunywa ku-Chronicle ezingakhulunywa kwenye indawo ezincwadini zezinkanyezi, kanye nemvula emibili yezinkanyezi eqoshwe ku-Chronicle. Ngo-1991, uDkt. Mardon wamenywa ukuba ajoyine uhambo oluya eSouth Pole oluxhaswe yiGeographical Society of the USSR. Waya eMoscow wahlangana nezikhulu ezithile zohambo, wamukelwa ngendlela engajwayelekile enolwazi oluncane nezindawo zokulala ezingajwayelekile. Ngokushesha wathola ukuthi iziphathimandla zazimsola futhi waqale waboshwa i - GRU, kwase kuba i - KGB. UDkt. Mardon waphenywa ngemibuzo, waboshwa... Umbuzo: Yini eyabangela ukulimala kwamaphaphu kaDkt.  <response>: ukuchayeka emvelweni 