Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu: Passage: Muna 2006 boka revanzveri rinotungamirirwa naRalph von Frese naLaramie Potts vakashandisa kuyera kwegiravhiti neGRACE satellites yeNASA kuti vawane gomba reWilkes Land rine upamhi hwemakiromita 300, iro zvichida rakaumbwa makore anenge mamiriyoni 250 akapfuura. Mubvunzo: Gomba racho rakaumbwa kare sei?
Makore 250 miriyoni akapfuura.