Isayensi ayiyeki ukuzama ukuthola iplanethi enezici ezifanayo nezasemhlabeni. Umgomo oyinhloko uwukuthola iplanethi okungenzeka ihlalwe. Kulokhu, ngonyaka ka-2018 iplanethi yatholwa I-Kepler 1649c. Iyiplanethi enezimo ezicishe zifane nezeplanethi yethu futhi engakwazi ukuhlalwa kuyo.
Kulesi sihloko sizokutshela mayelana nezici nokutholwa okwenziwe nge-exoplanet Kepler 1649c.
i-exoplanet Kepler 1649c
I-Kepler Space Telescope yayeka ukusebenza ngoNovemba 2018, kodwa idatha ehlinzekwe yi-observatory iyaqhubeka nokucutshungulwa umphakathi wezesayensi, ngokuqaphela okwembula amagugu afihliwe ngezikhathi ezithile. Isimanga sakamuva i-Kepler-1649c, i-exoplanet endaweni okuhlalwa kuyo inkanyezi. Kuleli qophelo, lapho sazi ngama-exoplanet angaphezu kuka-4.200, amaningi awo asendaweni okuhlalwa kuyo, singazibuza: Yini ekhetheke kangaka nge-Kepler-1649c? Nokho, eyokuqala ubukhulu bayo. I-Kepler-1649c iphinda izikhathi ezingu-1,06 ubukhulu boMhlaba. Ngamanye amazwi, iyiplanethi ewumhlaba endaweni okuhlalwa kuyo. Inkanyezi yayo iwuhlobo lwe-M olubomvu oluncane olunama-20% kuphela ubukhulu beLanga, ngakho indawo okuhlalwa kuyo yesistimu iseduze kakhulu nenkanyezi.
Eqinisweni, isikhathi se-orbital ye-Kepler-1649c yizinsuku eziyi-19,5 kuphela (cishe amakhilomitha ayizigidi eziyi-15). Naphezu kokuzungeza kuseduze kangaka, inezinga lokushisa elilinganayo elilinganiselwa ku-234 Kelvin futhi lihlanganisa u-74% wamandla aguquguqukayo uMhlaba owathola eLangeni. Ngaphezu kwalokho, "kuphela" ibanga leminyaka engu-300 yokukhanya, uma kuqhathaniswa noMhlaba. Iningi lamaplanethi itholwe nguKepler.
Futhi, kufanele kugcizelelwe ukuthi i-Kepler-1649c itholwe ngendlela yezokuthutha, ngakho-ke sazi kuphela usayizi wayo nesikhathi sokuzungeza. Iqiniso lokuthi isendaweni okuhlalwa kuyo akusho ukuthi inamanzi phezu kwayo, njengoba ukuba khona kwama-oxide e-liquid entweni kuncike kumingcele eminingi engaziwa (ukuminyana kanye nokwakheka komkhathi, isikhathi sokujikeleza, ukuthambekela kwe-eksisi, umsebenzi wangaphakathi, njll.). Njengoba ukubhalwa kwayo kubonisa, i-Kepler-1649c iyiplanethi yesibili etholwe ohlelweni lwe-Kepler-1649, ngemva kuka-Kepler-1649b, iplanethi enobukhulu bezinsuku ezingu-8,7 obukhona bayo okwaqinisekiswa ngaphambili. Ngakho-ke, i-exovenus.
Indawo ye-exoplanet Kepler 1649c
Imizila ye-Kepler-1649b ne-Kepler-1649c iku-9:4 resonance, kodwa lokhu kuzwakala kubuthakathaka kakhulu, ngakho-ke. kungase kube neplanethi yesithathu ohlelweni engakatholakali, etholakala phakathi kwamaplanethi amabili atholakele, futhi yomibili imihlaba ihlobene nale planethi ecatshangelwayo iku-resonance engu-3:2. Njengoba zingekho izimpawu zale planethi yesithathu emininingwaneni ye-Kepler, kusho ukuthi incane kune-Mars noma ukuthi indiza yayo ezungezayo inokuthambekela okuhlukile futhi ayikwazi ukudlulisa ilanga njengoba ibonakala eMhlabeni.
Noma kunjalo, okuthakazelisa ngempela nge-Kepler-1649c ukuthi itholwe kulo nyaka ngokuhlaziya idatha evela kumishini eyinhloko ye-Kepler etholwe phakathi kuka-2010 no-2013. Ngo-2014, kungenzeka kube ikhandidethi ye-exoplanet noma i-KOI (Kepler Object of Interest) yatholwa. ) eduze kwenkanyezi ebizwa ngokuthi KOI 3138.01. Ukuhlaziywa okwalandela kwejika elikhanyayo lale planethi ekhethiwe kusetshenziswa isofthiwe ethile ebizwa ngokuthi i-Robovetter kwaqinisekisa ngo-2017 ukuthi empeleni kwakuyiplanethi yangempela futhi yaqanjwa ngokuthi i-Kepler-1649b. Nokho, U-Robovetter ukhiphe elinye ithuba le-exoplanet, i-KOI 3138.02, njengeliphuzu okungelona iqiniso.. Ucwaningo olusha lwe-KOI 3138.02 olwenziwa yithimba lezazi zezinkanyezi eliholwa ngu-Andrew Vanderburg lukhombisa ukuthi iyiplanethi yangempela phela: Kepler-1649c. Konke kungenxa yokuthi ijika elikhanyayo le-KOI 3138.02 lidonse ukunaka kwabantu abebehlaziya idatha ye-Kepler. Lokhu kusho ukuthi, ngakolunye uhlangothi, izinto ezenqatshiwe njengezinto ezingamanga zisengakwazi ukufihla ama-exoplanets angempela ambalwa futhi, ngakolunye uhlangothi, ukuhlolwa kwabantu okubonakalayo kusenenzuzo enkulu kulo mkhakha.
Esinye isici esithakazelisayo se-Kepler-1649c yilokho iyiplanethi yokuqala okungenzeka kuhlalwe kuyo etholwe phakathi kwezilwane ezincane ezinosayizi omaphakathi ezibonwa u-Kepler. I-Kepler ayihlose kakhulu izinkanyezi zohlobo lwelanga, kodwa iphinde yabona ama-dwarf ambalwa abomvu emkhakheni wayo oyinhloko wokubuka. Nakuba ama-dwarfs abomvu ebonakala engenakuhlalwa kuwo kunezinkanyezi zohlobo lwe-solar ngenxa yokuphuma kwazo okuphezulu kokukhanya kwe-ultraviolet nokuthambekela kwazo ukukhipha amalangabi amakhulu, izinombolo zazo eziphelele nokuphila isikhathi eside kusho ukuthi, ngokwemibandela engenzeka, kufanele kube namaplanethi amaningi okuhlalwa kuwo. Ukunemba, siyazi kusukela kudatha ye-Kepler ukuthi, ngokwesilinganiso, i-dwarf ngayinye ebomvu inamaplanethi angaphezu kwamabili mancane kune-Neptune futhi anesikhathi esingaphansi kwezinsuku ezingu-200. Eqinisweni, ama-asteroids amaningi atholakala ezindaweni ezincane ezibomvu kunasezinkanyezini zohlobo lwelanga.
Iplanethi okuhlalwa kuyo
I-Kepler-1649c ayigcini nje ngokulingana eduze kakhulu noMhlaba ngokobukhulu kanye nenani lamandla eliwathola enkanyezini yawo, kodwa inikeza umbono omusha ngokuphelele wezinhlelo zasekhaya. Njalo ezikhathini eziyisishiyagalolunye lapho amaplanethi angaphandle esistimu ezungeza inkanyezi yawo ephethe, amaplanethi angaphakathi azungeza cishe izikhathi ezine.
Iqiniso lokuthi ama-orbits azo aqondana ebuhlotsheni obuzinzile obunjalo liphakamisa ukuthi uhlelo ngokwalo luzinzile kakhulu futhi kungenzeka lube khona isikhathi eside.
Izilinganiso zenkathi cishe eziphelele ngokuvamile Zibangelwa isenzakalo esibizwa ngokuthi i-orbital resonance., kodwa isilinganiso sesishiyagalolunye kuya kwezine sihluke kakhulu ezimisweni zamaplanethi. Ngokuvamile, i-resonance ivela ngendlela yobudlelwane ababili kuya koyedwa noma abathathu kuya kwababili. Nakuba kungaqinisekisiwe, okuyinqaba kwalobu budlelwano kungase kuphakamise ukuba khona kweplanethi emaphakathi, namaplanethi angaphakathi nangaphandle azungeza ngokuvumelanisa, okudala ukuzwakala kokukodwa kokuthathu-okubili.
Njengoba ubona, isayensi ayiyeki ukuzama ukuthola amaplanethi afana newethu asesimweni ukuze abone ukuthi angakwazi ukuhlalwa yini noma cha. Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana ne-exoplanet Kepler 1649c nezici zayo.