Ngemuva kokuhlaziya i- ukunyakaza komhlaba nemiphumela esinayo kithina, sizohlaziya i- ukunyakaza kwenyanga. Inyanga iyisathelayithi yethu yemvelo futhi futhi izungeza futhi izijikeleze iyodwa. Izinhlobo ezahlukahlukene zokunyakaza enakho nokusondela noma ibanga lesimo salo maqondana neplanethi yoMhlaba kunquma isikhawu sosuku, izinsuku, amasonto, izinyanga ngisho nonyaka futhi kuthinta amagagasi.
Ngakho-ke, kule ndatshana sizofunda ngokujulile ukuthi yikuphi ukuhamba kwenyanga nokuthi kunamiphi imiphumela empilweni eMhlabeni.
Yikuphi ukunyakaza okwenziwa yinyanga?
Njengoba kunamandla adonsela phansi ahehayo phakathi kwenyanga noMhlaba, kukhona nokunyakaza kwemvelo kwalesi satellite. Njengeplanethi yethu, inezinhlangano ezimbili ezihlukile ezaziwa ngokuthi ukuzungeza kwi-eksisi yayo nokuhumusha ku-orbit emhlabeni wonke. Lezi zinyathelo yilezo eziveza inyanga futhi zihlobene namaza futhi izigaba zenyanga.
Ngesikhathi sokunyakaza okuhlukile anakho, uthatha isikhashana ukukuqeda. Ngokwesibonelo, ithanga eliphelele lokuhumusha lithatha isilinganiso sezinsuku ezingama-27,32. Lokhu kwenza, ngokumangazayo, ukuthi inyanga ihlale isibonisa ubuso obufanayo futhi ibukeka imile ngokuphelele. Lokhu kungenxa yezizathu eziningi zejiyomethri nolunye uhlobo lokunyakaza olubizwa ngokuthi ukukhululwa kwenyanga esizokubona ngokuhamba kwesikhathi.
Lapho uMhlaba uzungeza iLanga, nenyanga iyakwenza futhi, kepha eMhlabeni, ohlangothini olusempumalanga. Ibanga elisuka enyangeni liye eMhlabeni ekuhambeni kwalo kwehluka kakhulu. Ibanga phakathi kweplanethi nesathelayithi ngamakhilomitha angama-384. Leli banga lihluka ngokuphelele ngokuya ngomzuzu lapho lisemzileni wawo. Njengoba i-orbit idida kakhulu futhi kwesinye isikhathi ikude, iLanga linethonya elikhulu ngamandla alo adonsela phansi.
Izindawo zenyanga azilungisiwe futhi zihamba kude ngeminyaka engu-18,6 yokukhanya. Lokhu kwenza ukuthi i-elliptical yenyanga ingalungiseki futhi isikhathi senyanga senzeka njalo ekuphendukeni kweminyaka engu-8,85. Le perigee yilapho inyanga isisesigabeni sayo esigcwele futhi isondele kakhulu emzileni wayo. Ngakolunye uhlangothi, i-apogee ilapho ikude kakhulu nomjikelezo.
Ukujikeleza kwenyanga nokuhumusha
Ukuhamba kwesathelayithi yethu ejikelezayo kuvunyelaniswa nokuhumusha. Ihlala izinsuku ezingama-27,32, ngakho-ke sihlala sibona uhlangothi olufanayo lwenyanga. Lokhu kwaziwa njengenyanga eseceleni. Ngesikhathi sokujikeleza kwayo Kwakha i-engeli yokuthambekela kwama-degree angama-88,3 maqondana nendiza ye-elliptical yokuhumusha. Lokhu kungenxa yamandla adonsela phansi akha phakathi kwenyanga noMhlaba.
Ngesikhathi sokunyakaza kwayo kokuhumusha eMhlabeni, ithambekele kuma-degree ama-5 maqondana ne-elliptical. Kuthatha ukwenza ukujika okuphelele kufane nokwako. Lokhu kususwa komhlaba okuzungeze iplanethi yikho okwenza amagagasi ahlukene esinawo njengamanje.
Okunye ukunyakaza okwenziwa yinyanga leyo kunguquko. Imayelana nokuzungeza inyanga enakho kwiLanga. Le nhlangano yenziwa ngokubambisana neplanethi yethu, njengoba izjikeleza yodwa futhi ihambe izungeze umhlaba.
Imiphumela yokuhamba kwenyanga
Ngenxa yalokhu kuhamba kwenyanga, sinezinhlobo ezithile zezinyanga okungenzeka ukuthi uzizwile zikhulunywa kodwa ongazazi kahle. Sizokuchazela zona ngamunye ngamunye.
- Inyanga yeSidereal. Yiyo ethatha izinsuku ezingama-27, amahora ayi-7, imizuzu engama-43 namasekhondi ayi-11. Le nyanga yenzeka lapho isigaba senyanga sesiqede isiyingi esiphelele. Umbuthano wehora uwumkhawulo kububanzi bomkhathi wasezulwini.
- Inyanga yesinodi. Yisikhathi esidingekayo ukudlula izigaba ezimbili ezilinganayo futhi imvamisa sithatha izinsuku ezingama-29. Kuyaziwa nangokuthi igama lokuphumula.
- Inyanga eshisayo. Cishe isikhathi lapho kunezinyathelo ezimbili ezilandelwa inyanga ngumbuthano wephuzu lama-Aries. Imvamisa ihlala izinsuku ezingama-27.
- Inyanga ye-Anomalistic. Ihlala izinsuku ezingama-27 namahora ayi-13 futhi kulapho kunezigaba ezimbili ezilandelanayo ku-perigee.
- Inyanga yeDraconic. Yisikhathi esithatha kusuka esigabeni esisodwa kuya kwesinye senyanga ukudlula endaweni ekhuphukayo. Kuthatha izinsuku ezingama-27 namahora ama-5.
Ukukhululwa kwenyanga
Kungumnyakazo onenyanga esingabona ngawo kuphela u-50% wobuso bawo noma ubuso obufanayo njalo. Kukhona nezinhlobo ezintathu zenkululeko. Sizozihlaziya ngokujulile.
- Ukukhululwa ebangeni. Kuhlobene nokuthambekela phakathi kokujikeleza kwenyanga nendiza ye-elliptical. Lokhu kwenza kube lula ukubona enyakatho naseningizimu yenyanga ngasikhathi sinye. Iphuzu lendiza ye-equator yenyanga lingaphezulu nangaphansi kwendiza ye-orbit. Lokhu kusiqinisekisa ukuthi kunendawo enkulu yokubuka evela esifundeni esiphambene nopholi.
- Ukukhululwa emini. Kule ngxenye inokuthile okuphathelene nendawo lapho obukayo lapho ethwebula isithombe senyanga. Kunezici eziningi zejometri okufanele uzicabangele.
- Ukukhululwa ngobude. Kungenxa yokuthi ukunyakaza kokujikeleza kwenyanga kufana ngokuphelele, kanti ukunyakaza kokuhumusha akunjalo. Lokhu kwenza umgijimi abe yingxenye lapho inyanga ihamba khona ngesivinini esikhulu futhi laphogee ihamba kancane. Okuthile okufanayo kuyenzeka ngoMhlaba nokujikeleza kwawo elizungeze ilanga uma use- i-aphelion ne-perihelion. Njengomphumela walokhu kuhamba sinamandla eNtshonalanga, okwenza sikwazi ukubona ubuso obubodwa kuphela ezindaweni ezisempumalanga nasentshonalanga zenyanga.
Kungashiwo ukuthi ukukhululwa kwenyanga kuyiphuzu elitholakala ebusweni benyanga futhi kulapho izinhlobo ezintathu zenkululeko zenzeka khona. Ngokusobala ibangela ukuthi ihambe ngendlela evunguza futhi ingabuyeli endaweni yayo yasekuqaleni.
Ngiyethemba lolu lwazi lukusiza ukwazi kabanzi ngokuhamba kwenyanga.