Shin akwai wasu duniyoyin da muhallinsu ya yi kama da namu? Godiya ga ci gaban fasahar sararin samaniya, yanzu mun san cewa akwai dubban taurari da ke kewaya taurari masu nisa. Wani sabon bincike ya nuna cewa wasu exoplanets a sararin samaniya suna daheliumyanayi masu wadata. Dalilin rashin daidaituwar girman taurari a cikin tsarin hasken rana yana da alaƙa daheliumabun ciki. Wannan binciken na iya ƙara fahimtar juyin halittar duniya.

Sirrin game da girman karkatar da taurarin sararin samaniya

Sai a shekarar 1992 ne aka gano na farko exoplanet. Dalilin da ya sa aka dauki tsawon lokaci ana samun taurari a wajen tsarin hasken rana shi ne, hasken tauraro ya toshe su. Saboda haka, masana ilmin taurari sun fito da wata wayo ta hanyar gano taurarin da ba a sani ba. Yana duba dimming na layin lokaci kafin duniyar ta wuce tauraronta. Ta wannan hanyar, yanzu mun san cewa taurari sun zama ruwan dare ko da a waje da tsarin hasken rana. Akalla rabin rana kamar taurari suna da aƙalla girman duniya ɗaya daga Duniya zuwa Neptune. An yi imanin cewa waɗannan taurari suna da yanayi na "hydrogen" da "helium", waɗanda aka tattara daga iskar gas da ƙurar da ke kewaye da taurari lokacin haihuwa.

Abin ban mamaki, duk da haka, girman exoplanets ya bambanta tsakanin ƙungiyoyin biyu. Ɗayan girman duniya ya kai ninki 1.5, ɗayan kuma ya ninka girman duniya. Kuma saboda wasu dalilai, da wuya babu wani abu a tsakani. Ana kiran wannan juzu'i mai girma "kwarin radius". An yi imanin warware wannan asiri zai taimaka mana mu fahimci samuwar waɗannan duniyoyi da juyin halitta.

Dangantaka tsakaninheliumda kuma girman karkatar da taurarin sararin samaniya

Wata hasashe ita ce girman karkata (kwari) na taurarin sararin samaniya yana da alaƙa da yanayin duniya. Taurari suna da munin wurare, inda a ko da yaushe ake yin bama-bamai da taurarin dan Adam da haskoki na X-ray da hasken ultraviolet. An yi imanin cewa wannan ya kawar da yanayin, ya bar ƙananan dutsen kawai. Saboda haka, Isaac Muskie, dalibin digiri na uku a Jami'ar Michigan, da Leslie Rogers, masanin ilmin taurari a Jami'ar Chicago, sun yanke shawarar yin nazarin abin da ya faru na tsirran yanayi na duniya, wanda ake kira "watsewar yanayi".

Don fahimtar tasirin zafi da radiation akan yanayin duniya, sun yi amfani da bayanan duniya da dokokin jiki don ƙirƙirar samfuri da gudanar da simulations 70000. Sun gano cewa, biliyoyin shekaru bayan samuwar duniyoyi, hydrogen tare da karamin adadin atomic zai bace a bayahelium. Fiye da kashi 40% na yawan yanayin duniya na iya haɗawa da suhelium.

Fahimtar samuwar taurari da juyin halitta alama ce ta gano rayuwa ta waje

Don fahimtar tasirin zafi da radiation akan yanayin duniya, sun yi amfani da bayanan duniya da dokokin jiki don ƙirƙirar samfuri da gudanar da simulations 70000. Sun gano cewa, biliyoyin shekaru bayan samuwar duniyoyi, hydrogen tare da karamin adadin atomic zai bace a bayahelium. Fiye da kashi 40% na yawan yanayin duniya na iya haɗawa da suhelium.

A gefe guda kuma, taurari waɗanda har yanzu suna ɗauke da hydrogen daheliumsuna da fadada yanayi. Saboda haka, idan har yanzu yanayin yana wanzu, mutane suna tunanin zai zama babban rukuni na taurari. Duk waɗannan duniyoyin na iya zama zafi, fallasa su ga zafin radiation, kuma suna da yanayi mai matsananciyar matsa lamba. Saboda haka, gano rayuwa kamar ba zai yiwu ba. Amma fahimtar tsarin halittar duniya zai ba mu damar yin hasashen yadda taurari ke wanzuwa da kamanninsu. Hakanan za'a iya amfani da shi don nemo taurarin da ke haɓaka rayuwa.