<prompt> Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu: Passage: Paaiita basa rokupedza kudzidza paSouth Dakota State University muna 1986, Dr. Mardon akakokwa kuti ave nhengo ye 1986-87 Antarctic meteorite expedition yeNASA neNational Science Foundation. Makiromita 170 kubva pachiteshi cheSouth Pole apo boka rake rakawana mazana emameteorite. Mukati mokugara kwake ikoko akatambura kuratidzwa kwezvakatipoteredza kwakakuvadza mapapu ake ndokumupa kukosora kusingaperi. Akagamuchira U.S. Congress Antarctic Service Medal nokuda kwekuedza kwake uye njodzi. Paakadzokera kuAlberta, akapa hurukuro pamusoro peAntarctica paYunivhesiti yeCalgary uye Yunivhesiti yeLethbridge. Akawana kubvunzurudzwa kuti ave nhengo yeCanada Soviet Arctic traverse kubva kuchamhembe kweSiberia kuenda kuEllesmere Island muCanada Arctic, asi akakundikana kupinda muchirongwa ichocho.Aive chikamu chechirongwa chakakundikana chekuwana meteorite muCanada Arctic pedyo neResolute muNorthwest Territories, uye akanyora pepa pamusoro pekukurukurirana kwake nevanhu vemunharaunda uye izvo maInuit akafunga nezvemameteorite. Aifanirawo kujoina chikwata cheArgentina chokuAntarctic mukupera kwema80, asi moto wakaitika pachiteshi cheArgentina cheAntarctic wakaita kuti ave nhengo yacho ibviswe. Imwe yemipiro yake inokosha zvikuru yesayenzi yezvematenga yaiva nhevedzano yenyaya dzaakanyora muAnglo-Saxon Chronicle. The Chronicle rondedzero inopfuurira yezvinoitika zvakasiyana-siyana muEngland munguva yepakati. Nebetsero yababa vake, nyanzvi yezvekare, Dr. Mardon akawana zviitiko gumi nerimwe zvemakometi zvinotaurwa muChronicle izvo zvisingataurwi kumwe kunhu muzvinyorwa zvemuchadenga, pamwe nemvura mbiri dzemameteor yakanyorwa muChronicle. Muna 1991, Dr. Mardon akakokwa kuti ajoine rwendo kuenda kuSouth Pole rwakaitirwa neGeographical Society yeUSSR. Akaenda kuMoscow ndokusangana navamwe vakuru vakuru veboka racho, achigamuchira kugamuchirwa kusinganzwisisiki nemashoko mashomanene uye pokugara pasingazivikanwi. Akakurumidza kuziva kuti akanga achifungidzirwa nezviremera uye akasungwa kutanga neGRU, ipapo neKGB. Dr. Mardon vakabvunzurudzwa, vakabatwa... Mubvunzo: Chii chakakonzera kukuvadzwa kwemapapu aDr. Mardon?  <response>: kuratidzwa kwezvakatipoteredza 