Inyanga njengeSathelayithi Yomhlaba
INyanga iyisathelayithi yemvelo yodwa yoMhlaba futhi iyisidumbu esiseduze kakhulu neplanethi yethu. Ukuba khona kwayo akugcini nje ngokuhlobisa isibhakabhaka sasebusuku kodwa futhi kuthinta izenzakalo zemvelo ezahlukahlukene ezibalulekile empilweni, njengezinga lolwandle, ukuqina kwe-axis yokujikeleza koMhlaba, kanye nesigqi sesikhathi emasikweni abantu. Kusukela ezikhathini zasendulo, iNyanga ibilokhu ibhekwa, inganekwane, nolwazi. Ngokuthuthuka kwesayensi yesimanje, iNyanga nayo ibe yindawo yokuhlola isikhala, ivula ukuqonda okusha ngomlando weSistimu Yelanga.
Ukwazi Inyanga: Izici Ezijwayelekile Nezimpawu
INyanga izungeza uMhlaba ngebanga elimaphakathi elingamakhilomitha angaba ngu-384.400. Uma iqhathaniswa noMhlaba, iNyanga inkulu kakhulu ngesathelayithi, inobubanzi obungamakhilomitha angaba ngu-3.474—cishe ingxenye yesine yobubanzi boMhlaba. Ubunzima beNyanga bucishe bube yi-1/81 kunoboMhlaba, ngakho-ke amandla ayo adonsela phansi aphansi. Ngenxa yalokho, into efanayo izozwakala ilula kakhulu ebusweni beNyanga.
Ubuso beNyanga bubonakala bumpunga futhi bugcwele imigodi. Ngokungafani noMhlaba, onomoya ojiyile kanye nezinqubo zokuguguleka okusebenzayo, iNyanga ayinawo umoya, ngakho-ke iminonjana yemithelela yezinkanyezi kanye noshintsho lobuso luhlala isikhathi eside kakhulu. Ngaphandle kwemigodi, kukhona "i-maria," noma ulwandle lwenyanga - amathafa amakhulu, amnyama angewona ngempela ulwandle lwamanzi, kodwa izindawo ezake zagcwala i-basaltic lava evela emisebenzini yasendulo yezintaba-mlilo.
Umsuka Wenyanga: Imibono Yokwakheka Kwayo
Enye yezinkolelo-mbono ezamukelwa kabanzi mayelana nokwakheka kweNyanga yi-giant impact hypothesis. Ngokwalo mbono, cishe eminyakeni eyizigidi eziyizinkulungwane ezingu-4,5 eyedlule, into enobukhulu beMars (evame ukubizwa ngokuthi iTheia) yashayisana noMhlaba omncane. Lokhu kushayisana kwaphonsa izinto ezivela emaphethelweni oMhlaba kanye ne-impactor endaweni ezungezile, lapho zahlangana khona kancane kancane zakha iNyanga.
Lo mbono usekelwa yimigqa eminingana yobufakazi, njengokufana kokwakheka kwe-isotopic kwamatshe enyanga namatshe oMhlaba. Kodwa-ke, ososayensi basaphenya ngemininingwane yalesi senzakalo, njengoba kunezici ezingacacile, njengobungako bomnikelo we-impactor nokuthi waxutshwa kanjani.
Ukunyakaza Kwenyanga: Ukujikeleza, Ukuguquka, kanye Nokukhiya Kwe-Tidal
INyanga yenza ukunyakaza okubili okuyinhloko: ukujikeleza ku-axis yayo (ukujikeleza) kanye nokujikeleza uMhlaba (ukuguquka). Ngokuthakazelisayo, isikhathi sokujikeleza kweNyanga sifana nokujikeleza kwayo, cishe izinsuku ezingu-27,3. Ngenxa yalokho, iNyanga ihlale ibheke ohlangothini olufanayo olubheke uMhlaba. Lesi simo sibizwa ngokuthi ukujikeleza okuhambisanayo noma ukukhiya kwe-tidal.
Yingakho abantu eMhlabeni bekwazi ukubona kuphela "uhlangothi oluseduze" lweNyanga. "Uhlangothi olukude" lweNyanga lwabonakala ngokucacile ngemva kokuthuthuka kobuchwepheshe bezindiza. Kodwa-ke, igama elithi "uhlangothi olumnyama" livame ukungaqondwa kahle—eqinisweni, zonke izinhlangothi zeNyanga zithola ukukhanya kwelanga okushintshanayo, ukuthi nje uhlangothi olulodwa alubonakali ngqo eMhlabeni.
Izigaba Zenyanga Nomphumela Wazo Emhlabeni
Izigaba zeNyanga zenzeka ngenxa yokushintsha kwesimo seNyanga uma siqhathaniswa noMhlaba neLanga. Uma iNyanga iphakathi koMhlaba neLanga, siyibona njengenyanga entsha, kanti uma iNyanga iphambene neLanga, sibona inyanga egcwele. Phakathi, kunezigaba zekota kanye ne-crescent.
Izigaba zeNyanga zibalulekile ezicini ezahlukene zokuphila komuntu. Kusukela ezikhathini zasendulo, abantu bebesebenzisa ikhalenda yenyanga ukunquma izikhathi zokutshala, amasiko enkolo, ngisho namakhalenda endabuko. Ngisho nanamuhla, ezinye izinhlelo zekhalenda zisacabangela umjikelezo weNyanga, ikakhulukazi ekunqumeni amaholide athile abalulekile.
Amagagasi Olwandle: Umthelela Wamandla Adonsela Phansi Enyanga
Enye yethonya elisobala kakhulu leNyanga eMhlabeni ukuhamba kwamanzi olwandle. Ukudonsa kweNyanga okudonsela amanzi emanzini oMhlaba, okubangela ukuvuvukala ohlangothini olubheke eNyangeni. Ngesikhathi esifanayo, uhlangothi oluphambene noMhlaba nalo luzwa ukuvuvukala ngenxa yokungasebenzi kahle kohlelo lwe-Earth-Moon. Ngenxa yalokho, izindawo eziningi ezisogwini zithola amaza aphezulu amabili kanye namaza aphansi amabili ngosuku.
Ngaphezu kweNyanga, iLanga liphinde lithonye amagagasi, yize umthelela walo ungabalulekile kangako ngenxa yebanga lalo elikhulu. Lapho iLanga neNyanga ziqondaniswe (ngesikhathi sezinyanga ezintsha nezigcwele), amagagasi angaba phezulu, abizwa ngokuthi amagagasi entwasahlobo. Uma akha i-engeli efanele (isigaba sekota), amagagasi aphansi, abizwa ngokuthi amagagasi e-neap.
Ukuzinza Kwenyanga Nomhlaba
INyanga nayo idlala indima ekugcineni ukuzinza kwe-axis yokujikeleza koMhlaba. Ngaphandle kweNyanga, i-axis yoMhlaba kulindeleke ukuthi ibhekane nezinguquko ezinkulu ngenxa yethonya lamandla adonsela phansi kwamanye amaplanethi, ikakhulukazi iJupiter. Ushintsho olunjalo olukhulu ekuthambekeni lungabangela ukuguquguquka okukhulu kwesimo sezulu, okungenzeka kwenze kube nzima ngempilo njengoba siyazi ukuthi ichume.
Ngaphezu kwalokho, iNyanga isuka kancane kancane eMhlabeni ngamasentimitha ambalwa ngonyaka ngenxa yokuxhumana kwamagagasi. Amandla okujikeleza komhlaba adluliselwa kancane kancane emjikelezweni weNyanga, okwenza usuku loMhlaba nalo lukhuphuke kancane kakhulu ngokwezikhathi zejiyoloji.
Ubuso Benyanga: Ama-crater, ama-Regolith, kanye ne-Traces of History
Ubuso beNyanga bumbozwe ungqimba lothuli nezingcezu zamadwala ezibizwa ngokuthi i-regolith. I-Regolith yakheka ngenxa yemithelela ye-meteor eminyakeni eyizigidigidi. Ngenxa yokuthi akukho moya ominyene, ngisho nama-meteor amancane angafinyelela phezulu kanye nomthelela. Ama-crane amakhulu afana noTycho noCopernicus afakazela umlando omude wokushayisana phakathi kwezinto zasezulwini.
Ezinsikeni zeNyanga, kunemigodi engakaze ivezwe ngqo elangeni. Lezi zindawo zibizwa ngokuthi "izifunda ezinethunzi elihlala njalo" futhi kucatshangwa ukuthi zineqhwa lamanzi. Ukutholakala kwaleli qhwa lamanzi kubalulekile, njengoba kungasekela izinhlelo zokuhlola zesikhathi eside kanye nokusetshenziswa okungenzeka kwezinsizakusebenza emisebenzini yabantu.
Ukuhlola Kwenyanga: Kusukela Ku-Apollo Kuya Enkathini Yanamuhla
Ukuhlola kwenyanga kwafinyelela umvuthwandaba lapho imisebenzi ye-NASA ye-Apollo ifika ngempumelelo kubantu ngo-1969. Izifundo zamatshe zabuya zanikeza ulwazi olubalulekile mayelana nobudala beNyanga, ukwakheka kwayo, kanye nomlando wayo we-geology. Ngemva kwesikhathi se-Apollo, ukuhlola kwaqhubeka nemisebenzi eyahlukahlukene yamarobhothi evela emazweni amaningi.
Enkathini yanamuhla, iNyanga iphinde yaba yindawo enkulu yokuya kuyo, kokubili ocwaningweni lwesayensi kanye nesinyathelo sokuqala sokuhlola iMars. Uhlelo lwe-Artemis lwe-NASA, kanye nemisebenzi evela eShayina, eNdiya nakwamanye amazwe, kubonisa intshisekelo ekhulayo eNyangeni. INyanga ibhekwa "njengelabhorethri yemvelo" yokufunda umlando weSistimu Yelanga nokuhlola ubuchwepheshe bokuhlola isikhala.
Inyanga Ekuphileni Komuntu Namasiko
Ngaphandle kwendima yayo kwezesayensi, iNyanga inendawo ebalulekile emasikweni. Imiphakathi eyahlukahlukene ihlobanise iNyanga nezimpawu zokuzala, isikhathi, ngisho nezinganekwane. INyanga iphinde yaphefumulela ubuciko, izincwadi, kanye nezingoma. Kusukela ezinganekwaneni zezimpisi kuya emikhosini yenyanga egcwele, iNyanga iyingxenye yomcabango wabantu bonke.
Ngakolunye uhlangothi, iNyanga iphinde ithonye impilo yanamuhla ngezindlela ezingokoqobo, njengokuhamba ngemikhumbi kwasekuqaleni, amakhalenda, kanye nezifundo zokudoba nokuthutha. Ukuba khona okubonakalayo kweNyanga kwenza kube yibhuloho phakathi kokuhlangenwe nakho kwansuku zonke nokuqonda kwezinkanyezi.
I-Penutup
Njengesathelayithi yoMhlaba, iNyanga ingaphezu nje kwenkanyezi esibhakabhakeni sasebusuku. Iyingxenye ebalulekile yesistimu yoMhlaba, ithonya izilwandle zeplanethi yethu, isimo sezulu, kanye nokuzinza. INyanga iphinde ibambe umlando woHlelo Lwelanga okunzima ukuwubona eMhlabeni ngoba ubuso boMhlaba buhlala bushintsha ngenxa yomsebenzi we-geological kanye nomkhathi. Ngokukhula kokuhlola kwanamuhla, iNyanga ayilona nje uphawu lobuhle nemfihlakalo, kodwa futhi iyisihluthulelo sokuqonda isikhathi esidlule soMhlaba nokuvula amathuba ekusasa lesintu emkhathini.
