Mushure mekudzidza Mars kwemakumi emakore, masayendisiti anobvuma kuti pane mukana wakanaka wekuti asteroid kana comet kukanganisa yakachinja ramangwana reRed Planet. Inofananidzwa nePasi, Mars izere nemakorokoza anokanganisa, izvo hazvishamise kupihwa nzvimbo yaMars isingafadzi mune yedu yezuva, padyo padyo nebhandi reasteroid.
Nekuda kweizvozvo, Mars inoramba ichirova neasteroid, uye kusiyana nePasi, Mars haina mwedzi wakakura kuti uichengetedze kubva kune asteroid iri kuuya.
Tichitarisa kumashure kuburikidza nenguva, tinoziva kuti nzvimbo huru matombo akakanganisa Nyika munguva yakapfuura, uye zvimwe zvezviitiko izvi zvinogona kunge zvakachinja nhoroondo yenhoroondo yepasi redu.
Chicxulub impact crater, iri paYucatan peninsula yeMexico (ona mufananidzo uri pamusoro), ndiyo imwe yemienzaniso yakanaka yatinoziva nezvayo, uye dzimwe nyanzvi dzinofunga kuti ndiyo yaive honzeri yekuparara kwedinosaur.
Zvinoita here kuti chimwe chinhu chakafanana chingaitika paMaris kana chimwe chinhu chakafanana chakaitika pasi pano? PaMars, takawana chinokatyamadza chinokanganisa nzvimbo munzvimbo yeLyot iyo iri makiromita mazana maviri nemashanu pakureba.
Hukuru hweichi crater chinoratidza kuti simba racho raive rakasimba sei, uye chingave chimwe chezvikonzero chikuru kuti Mars yava "renje."
Mhedzisiro yemakometi iyi ingadai yakaparadza hurongwa hweMars. Chingave chiitiko chakashata chose maererano neshanduko yemamiriro ekunze. Zvinoita here kuti Mars yaive nehupenyu hwakareba isati yarasa mhepo yayo?
Kunyangwe budiriro dzaimbodaidza Mars "kumba" dzave kutsakatika. Kana zvirizvo, vaMartian vakaenda kupi? Vakazviita vapenyu here? Vakakwanisa kutiza njodzi iyi isati yaitika? Mars yakabatana nePasi neimwe nzira here? Iyi ingori mishoma pane yakawanda mibvunzo inoda kupindurwa.
Viking ndakasvika pachinangwa chayo, Mars, muna Chikunguru 20, 1976, mushure merwendo rwemwedzi gumi kubva pasi. Mifananidzo iyo Viking yandakadzosera kuPasi yaishamisa, uye mimwe yacho yakaratidza kuti Mars yakanga isiri iyo yakasarudzika nePasi.
Dzimwe nzvimbo dziri paMars, dzakadai seRufu Valley, dzakafanana nenzvimbo dzePasi. Mushure mekuita bvunzo dzakasiyana mukutsvaga hupenyu paMars, nyaya yeViking I inowedzera kunakidza. Viking ndakadzosera zvinokakavara mhedzisiro.
Dr. Gil Levin vakagadzira imwe yemuyedzo weViking, iyo yaive bvunzo “yakapusa”. Akatsanangura kuti tusingaoneki, seni newe neni nezvimwe zvese, tinofema tobva taburitsa carbon dioxide.
NASA yakaunganidza sampu diki yeMartian ivhu ndokuiisa mukati mekabhegi kadiki, iyo yakaongororwa kwevhiki kune zviratidzo zve "mabhuru" mukati mehubhu, uyezve chimwe chinhu chisingatarisirwi chakaitika mushure memazuva manomwe.
Zvinoenderana nematanho eNASA, bvunzo yehupenyu paMars yaive yakanaka sezvo "mabhuru" akaonekwa mukati memudziyo weViking I. Mimwe bvunzo ine nzira dzakasiyana dzakadzoka dzisina kunaka, nepo bvunzo imwe yakadzoka yakanaka pahupenyu.
NASA yakasarudza kungwarira mune iyi kesi, ichiti, "Hapana chibvumikiso chehupenyu paMars." Sekureva kwemamwe masayendisiti, Mars yaimbove nemhepo yakafanana neyePasi, asi yakaparadzwa makore makumi matanhatu nemashanu apfuura.
Kuwedzera kune iyi dzidziso, pakave nekufungidzira munguva yakapfuura kuti budiriro iyo yaimbogara Mars inogona kunge yakatizira kuNyika ichitsvaga nzvimbo yakachengeteka. Saka, isu tave kukodzera se "maMartian" atange tichitsvaga?
Mamwe masayendisiti anoti awana humbowo hwakasimba hwevanhu vakatsakatika paMars, uye kuti vangangodaro vakaona chiratidzo chenyukireya mumhepo yeMartian inoenderana neyepasi mushure mekuyedzwa kwenyukireya.
Sekureva kwemasayendisiti, humbowo hweXenon-129 hunogona kuwanikwa muhukuru hwakawanda paMars, uye nzira chete inozivikanwa inozivikanwa inoita Xenon-129 kuputika kwenyukireya. Uyu unongova mumwe muenzaniso wekuti Mars nepasi zvakafanana sei? Kana zvinoratidza here kuti Mars yaimbova nzvimbo yakasiyana zvakanyanya?
