Iplanethi iVenus yiplanethi yesibili evela eLangeni kweyethu Uhlelo lomkhathi. Ingabonwa eMhlabeni njengento ekhanya kakhulu esibhakabhakeni, ngemva kweLanga neNyanga. Le planethi yaziwa ngokuthi inkanyezi yokusa uma ivela empumalanga ekuntweleni kokusa kanye nenkanyezi yakusihlwa lapho ibekwe entshonalanga lapho kuhwalala. Kulesi sihloko, sizogxila kuzo zonke izici zeplanethi i-Venus nomkhathi wayo ukuze ufunde kabanzi mayelana namaplanethi kusistimu yethu yeSolar.
Ingabe ufuna ukwazi konke mayelana Venus? Qhubeka ufunda
Ukuqaphela iplanethi iVenus
Ezikhathini zasendulo, inkanyezi yakusihlwa yayaziwa ngokuthi iHesperus nenkanyezi yasekuseni njengePhosphorus noma uLucifer. Lokhu kungenxa yamabanga aphakathi kwemizila yeVenus noMhlaba ukusuka eLangeni. Ngenxa yamabanga amakhulu, iVenus ayibonakali ngaphezu kwamahora amathathu ngaphambi kokuphuma kwelanga noma amahora amathathu emva kokushona kwelanga. Izazi zezinkanyezi zakudala zazicabanga ukuthi uVenus angaba yimizimba emibili ehlukene ngokuphelele.
Uma ibukwa ngesibonakude, iplanethi inezigaba ezinjengeNyanga. Lapho iVenus isesigabeni sayo esigcwele kungabonakala incane ngoba iseceleni elikude kakhulu neLanga eMhlabeni. Izinga lokukhanya okuphezulu lifinyelelwa lapho lisesigabeni esikhulayo.
Izigaba nezikhundla zeVenus esibhakabhakeni ziyaphindwa esikhathini seminyaka eyi-1,6. Izazi zezinkanyezi zibhekisela kule planethi njengeplanethi kadadewabo yoMhlaba. Lokhu kungenxa yokuthi ayafana ngosayizi, njengobukhulu, ubukhulu, nevolumu. Zombili zakhiwe ngaphezulu noma ngaphansi ngasikhathi sinye futhi zajiya kusuka ku-nebula efanayo. Konke lokhu kwenza UMhlaba noVenus bangamaplanethi afanayo. Ungafunda kabanzi mayelana nalobu budlelwano esihlokweni mayelana amanzi kwamanye amaplanethi kanye nomthelela wayo ongaba khona kuVenus.
Kucatshangwa ukuthi, uma kungaba sebangeni elifanayo ukusuka eLangeni, uVenus angabamba impilo njengoMhlaba. Ukuba kwenye indawo yeSolar System, sekuyiplanethi ehluke kakhulu kunale yethu.
Izici eziyinhloko
I-Venus iyiplanethi engenazo izilwandle futhi izungezwe umoya onzima kakhulu owakhiwe ngokuyinhloko yi-carbon dioxide futhi cishe ongenawo umhwamuko wamanzi. Amafu akhiwe nge-sulfuric acid. Phezulu sithola ingcindezi yasemkhathini ephakeme izikhathi ezingama-92 kuneplanethi yethu. Lokhu kwenza kungenzeki ngomuntu ovamile ukuba asinde ngisho nomzuzu owodwa phezu kwale planethi. Ukuze ufunde kabanzi mayelana nezimo ezimbi kakhulu zeVenus, ungabheka isihloko esithi imfihlakalo yezinga lokushisa likaVenus.
Yaziwa nangokuthi iplanethi eshisayo, ngoba ingaphezulu linezinga lokushisa lama-482 degrees. La mazinga okushisa abangelwa ngumphumela omkhulu wokushisa okuveliswa umoya ominyene nosindayo. Uma kutholakala umphumela wokubamba ukushisa kwiplanethi yethu ukugcina ukushisa okunomkhathi omncane kakhulu, cabanga ngomphumela wokugcina ukushisa ozoba nawo emoyeni osindayo. Onke amagesi avaleleke emkhathini futhi awakwazi ukufinyelela esikhaleni. Lokhu kubangela ukuthi iVenus ishise kune iplanethi i-mercury yize kusondele iLanga.
Usuku e-Venusian inezinsuku ezingama-243 zomhlaba futhi yinde kunonyaka wayo wezinsuku ezingama-225. Lokhu kungenxa yokuthi iVenus ijikeleza ngendlela exakile. Ikwenza lokho kusuka empumalanga kuye entshonalanga, ngakolunye uhlangothi kuya emaplanethi. Kumuntu ophila kule planethi, wayekwazi ukubona ukuthi iLanga lizophuma kanjani entshonalanga bese lishona lizokwenzeka empumalanga.
I-Atmosphere
Iplanethi yonke imbozwe ngamafu futhi inomoya ominyene. Izinga lokushisa eliphezulu lenza izifundo ezivela eMhlabeni zibe nzima. Cishe lonke ulwazi lwethu ngeVenus siluzuze ngomkhumbi-mkhathi okwazile ukwehla emkhathini wawo ominyene othwele ama-probe. Kusukela ngo-2013 Imishini engama-46 yenziwe kwiplanethi eshisayo ukuthola okuningi ngaye.
Umkhathi wakhiwa cishe ngokuphelele yisikhutha. Le gesi igesi enamandla abamba ukushisa ngenxa yekhono layo lokugcina ukushisa. Ngakho-ke, amagesi asemkhathini awakwazi ukufudukela esikhaleni futhi adedele ukushisa okuqongelelwe. Isisekelo samafu singama-50 km ukusuka ebusweni futhi izinhlayiya ezikula mafu ngokuvamile ziyi- sulfuric acid egxilile. Ngaphezu kwalokho, iplanethi ayinawo amandla kazibuthe abonakalayo. Ukuze uqonde kangcono isimo somkhathi weVenus, ungafunda ngakho ukushintsha kwesimo sezulu kuVenus.
Ukuthi cishe i-97% yomkhathi yakhiwe nge-CO2 akumangalisi kangako. Futhi ukuthi uqweqwe lomhlaba walo lunenani elilinganayo kodwa ngesimo selimestone. Kuphela u-3% womkhathi yi-nitrogen. Umhwamuko wamanzi namanzi yizinto ezingavamile kakhulu kuVenus. Ososayensi abaningi basebenzisa impikiswano yokuthi, ukusondelana neLanga, kungaphansi kwethonya elinamandla kakhulu lokushisa okuholela ekuhwamukeni kwezilwandle. Ama-athomu e-hydrogen kuma-molecule wamanzi abengalahleka esikhaleni nakuma-athomu e-oksijeni kuqweqwe.
Amafu nokwakheka kwawo
I-sulfuric acid etholakala emafini nayo iyafana naleyo esemhlabeni. Iyakwazi ukwakha inkungu enhle kakhulu ku-stratosphere. I-acid iwela emvuleni bese iphendula ngezinto ezingaphezulu. Lokhu kwiplanethi yethu kubizwa ngemvula ene-asidi futhi kuyimbangela yokulimala okuningi ezindaweni zemvelo njengamahlathi.
KuVenus, i-asidi iyahwamuka ngaphansi kwamafu futhi ayidluli, kepha ihlala emkhathini. Isihloko se amafu ayabonakala eMhlabeni nakuPioneer Venus 1. Ungabona ukuthi isakazeka kanjani njenge haze amakhilomitha angama-70 noma angama-80 ngaphezulu kobuso beplanethi. Amafu aqukethe ukungcola okuphuzi okukhanyayo futhi atholakala kangcono kuma-wavelengths aseduze ne-ultraviolet.
Ukwehluka kokuqukethwe yi-sulphur dioxide emkhathini kungabonisa uhlobo oluthile lwentaba-mlilo esebenzayo emhlabeni. Ezindaweni lapho kunokugxila okuphezulu, kungase kube nentaba-mlilo esebenzayo. Ukuze uthole ulwazi olwengeziwe mayelana namasathelayithi e-Venus, ungathintana ingxenye yamasathelayithi eVenus.
Ngiyethemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nenye iplanethi kuSolar System.