Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Kunyange zvazvo Mars isina uchapupu hwokuti ine magineti akaumbwa, kuongorora kwakaratidza kuti zvikamu zvepasi zvakaitwa nemagineti, zvichiratidza kuti kuchinja-chinja kwepolarity kwemagineti yacho kwakaitika kare. Iyi paleomagnetism yemaminerari anogamuchirwa nemagineti yakafanana nemabhendi anochinjana anowanikwa pasi pemakungwa ePasi. Imwe rondedzero, yakabudiswa muna 1999 uye yakaongororwazve muna October 2005 (pamwe nebetsero yeMars Global Surveyor), ndeyokuti mabhendi aya anoratidza chiitiko cheplate tectonic paMars mabhiriyoni mana emakore apfuura, pamberi pe dynamo yepasi isati yamira kushanda uye magnetic field yepasi isati yanyangarika. Zvinofungidzirwa kuti, panguva yekuumbwa kweSolar System, Mars yakasikwa semhedzisiro yechiitiko che stochastic chekumhanya-kure kwekuwedzera kwezvinhu kubva mu protoplanetary disk yaitenderera Zuva. Mars ine zvinhu zvakawanda zvemakemikoro zvinosiyana-siyana zvinokonzerwa nenzvimbo yayo muSystem yeZuva. Zvinhu zvine poindi yakaderera yokubvira, zvakadai seklorini, phosphorus, nesarufa, zvakajairika paMars kupfuura paPasi; zvinhu izvi zvichida zvakatungamirirwa kunze nemhepo ine simba yezuva yezuva duku. Pashure pokuumbwa kwemapuraneti, ose akaiswa pasi peinonzi "Late Heavy Bombardment". Inenge 60% yenzvimbo yeMars inoratidza chinyorwa chemigumisiro inobva munhambo iyoyo, nepo rutivi rukuru rwasara rwuri zvichida rwakafukidzwa nemakomba makuru emigumisiro anokonzerwa neaya zviitiko. Pane uchapupu hwokuti pane gomba rakakura rakaputika muchikamu chenyika chiri kuchamhembe kweMars, rakareba makiromita 10 600 nekureba makiromita 8 500, kana kuti rakapetwa kanokwana kana kukura kweSouth Pole yeMwedzi <unk> Aitken basin, gomba rakaputika rakakura kupfuura ose akambowanikwa. Iyi rondedzero inoratidzira kuti Mars yakarohwa nomuviri wakakura saPluto anenge makore mabhiriyoni mana apfuura. Chiitiko ichi, icho chinofungidzirwa kuti ndicho chakakonzera kuti nyika yeMars ive nehemisphere mbiri, chakaita kuti pave neBorealis basin yakatsetseka iyo inofukidza 40% yepasi.  Mubvunzo: Dhayamita iri mumakiromita yebani rokurovera riri paMars yakadini?
6 600 nekupetwa ka5 300