IVenus

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IVenus yiplanethi yesibini ukusuka eLangeni. Yiplanethi enamatye eneatmosfera exineneyo kuzo zonke imizimba yamatye kwiSolar System, kwaye iyona kuphela enobunzima kunye nobukhulu obusondele kummelwane wayo ojikelezayo uMhlaba . Ukujikeleza ngaphantsi (ngaphakathi kwi-orbit yomhlaba), kubonakala kwisibhakabhaka soMhlaba esihlala sikufutshane neLanga, njengokuba "yinkwenkwezi yasekuseni" okanye "yinkwenkwezi yangokuhlwa". Ngelixa oku kukwayinyaniso kwiMercury, iVenus ibonakala ngokugqame ngakumbi, kuba iyeyesithathu into eqaqambileyo kwisibhakabhaka soMhlaba emva kweNyanga neLanga,   ibonakala iqaqambile kunayo nayiphi na enye iplanethi yakudala efana neenkwenkwezi okanye nayiphi na into ezinzileyo . inkwenkwezi . Ngodumo olunjalo esibhakabhakeni soMhlaba, iVenus ngokwembali ibiyinto eqhelekileyo nebalulekileyo ebantwini, kuzo zombini iinkcubeko zabo kunye nenzululwazi ngeenkwenkwezi.

IVenus inomazibuthe obuthathaka kunye nomoya oshinyeneyo wekharbhon dayoksayidi, nto leyo edala, kunye nelifu eligqumayo le-sulfuric acid, ifuthe eligqithisileyo legreenhouse . Oku kubangela umphezulu wobushushu obuphakathi kwe  kunye noxinzelelo olutyumzayo lwamaxesha angama-92 oMhlaba kwinqanaba lolwandle, ukuguqula umoya ube lulwelo olugqithisileyo, ngelixa ukwindawo yokuphakama kwamafu engama  . ngaphezulu komphezulu, uxinzelelo, ubushushu kunye nemitha yemitha ziyafana kakhulu kumphezulu woMhlaba. Iimeko ezinokuthi zilungele ubomi kwiVenus zichongiwe kumaleko ayo amafu, kunye nophando lwakutsha nje lufumene ubungqina, kodwa obungaqinisekanga, ubungqina bobomi kwiplanethi. IVenus isenokuba yayinamanzi angaphezulu kwamanzi kwasekuqaleni kwembali yayo, enokwenzeka ngokwaneleyo ukuba yenze iilwandlekazi, kodwa iziphumo ezibalekayo zegreenhouse ekugqibeleni ziye zaba ngumphunga nawaphi na amanzi, athi ke athatyathelwa esithubeni ngumoya welanga .    Ngaphakathi, iVenus kucingelwa ukuba iqulathe undoqo , ingubo, kwaye uqweqwe, oluya mva lukhupha ubushushu bangaphakathi ngentaba-mlilo esebenzayo, bubumba umphezulu ngokuphinda kuvele umphezulu omkhulu endaweni yepleyiti tectonics . IVenus yenye yeeplanethi ezimbini ezikwiSolar System ezingenazo iinyanga . 

IVenus inomjikelezo oye wacotha kwaye wajikela kwicala le-orbital direction ( retrograde ) ngemisinga enamandla kunye nokutsalwa kweatmosfera yayo. Oku kujikeleza kuvelisa, kunye nexesha leentsuku ezingama-224.7 zomhlaba kuthatha iVenus ukugqiba i-orbit ejikeleze iLanga (unyaka welanga waseVenusian), ubude belanga lelanga laseVenusian leentsuku ezili-117 zomhlaba, olona lude kwiSolar System, olukhokelela kwiVenusian. unyaka ungaphantsi kweentsuku ezimbini zeVenusian ubude. Iindlela zeVenus kunye noMhlaba zezona zikufutshane phakathi kwazo naziphi na iiplanethi zeSolar System, zisondela enye kwenye ngexesha le-synodic le-1.6 leminyaka. Ngelixa oku kubavumela ukuba basondele omnye komnye kwindawo engaphantsi kunezinye iiplanethi zeSolar System, iMercury ihlala ngokomndilili kufutshane nabo kunye nayo nayiphi na enye iplanethi, njengoko iMercury yeyona planethi isembindini kwaye idlula rhoqo.  Oko kuthethiweyo, iVenus kunye noMhlaba phakathi kwazo unowona mahluko usezantsi kumandla womxhuzulane kunayo nayiphi na enye iperi yeplanethi yeSolar System.

Ngo-1961, iVenus yaba yinto ekujoliswe kuyo kwinqwelomoya yokuqala phakathi kweeplanethi kwimbali yoluntu, ilandelwa zizinto ezininzi ezibalulekileyo zokuqala phakathi kweeplanethi njengokufika kokuqala okuthambileyo kwenye iplanethi ngo-1970. Ezi probe zenze kwacaca ukuba iziphumo ezigqithisileyo ze-greenhouse zidale iimeko ezicinezelayo, ingqiqo eye yazisa ngokubalulekileyo uqikelelo malunga nokufudumala kwehlabathi .   Oku kufunyanisiweyo kuye kwamisa uninzi lwengqwalasela kwiithiyori kunye nentsomi eyayisaziwa ngelo xesha malunga neVenus ngokuba yindawo ekunokuhlalwa kuyo okanye ehlala abantu. Iinqwelomoya eziya eVenus zicetyisiwe nangona kunjalo, nokuba zibhabhe ngeVenus, zincedise amandla omxhuzulane ukuze zifike kuMars ngokukhawuleza nangokukhuselekileyo, okanye zingene kwi-atmosfera yaseVenus kwaye zihlale phezulu kwiindawo eziphakamileyo ezineemeko ezithelekiseka ngakumbi kumphezulu woMhlaba, ngaphandle kokwakheka kwe-atmospheric, kunayo nayiphi na indawo. ngenye indlela kwiSolar System.