The Earth ta juyawa a kusa da rãnã da muhimmanci

Ko a zamanin da, kallon taurari sama, mutane sun lura cewa, a lokacin da rana, da rãnã da dare sama - kusan duk taurari - daga lokaci zuwa lokaci maimaita hanya. Wannan ya nuna cewa akwai dalilai guda biyu don wannan sabon abu. Ko akwai Duniya ta juyawa a kusa da rãnã a kan bango na har yanzu taurarin sama ko sama revolves a kusa da Duniya. Klavdiy Ptolemey, shahararren tsoho Greek falakin, harkokin kimiyya, kuma geographer, kamar yadda yanke shawarar wannan batu ta hanyar rinjayarwa kowa da kowa cewa akwai doguwar a kusa da rãnã da sama tsit Duniya. Duk da cewa da geocentric tsarin ba zai iya bayyana yawa astronomical mamaki, ya zauna tare da shi.

Heliocentric wannan tsarin dangane da wani version, lashe ta fitarwa a cikin dogon da kuma ban mamaki gwagwarmaya. Mutu a kan gungumen azaba Dzhordano Bruno, Galileo gane da shekaru "adalcin" na Inquisition, amma "... amma duk da haka bai motsa!"

Yau, da Duniya ta juyawa a kusa da rãnã da aka dauke su a cika tabbatar. A musamman, da motsi na duniya tamu ta kewayewa kusa da rãnã tabbatar aberration na Starlight da parallax motsi a kan jinkiri na shekara guda. Yau gano cewa, shugabanci na Duniya ta juyawa, mafi daidai, ta barycenter, na sarari suKe daidai da shugabanci na juyawa game da axis, Ina nufin za daga gabas zuwa yamma.

Akwai da yawa facts nuna cewa Duniya motsa a sarari a cikin wani hadadden falaki. Juyawa na Duniya a kusa da rana tare da da motsi a kusa da axis of precession da nutation oscillations m jirgin da rana a cikin wani karkace a cikin Galaxy, wanda kuma shi ne ba a wurin.

Juyawa na Duniya a kusa da rana, kazalika da sauran taurari, kara a wani elliptical falaki. Saboda haka, sau ɗaya a shekara, a kan Janairu 3, da Duniya ne a matsayin kusa da rana, da kuma sau daya, a kan 5 Yuli, an cire daga shi ta hanyar mafi girma nesa. Bambanci tsakanin perihelion (147 miliyan km.) Kuma aphelion (152 miliyan. Km), idan aka kwatanta da nisa daga rana zuwa ga duniya ne kadan.

Motsi tare da sarari suKe kusa da rana, wannan duniya tamu yake yi 30 km da na biyu, da kuma Duniya ta juyin juya halin a kusa da rãnã da aka kammala cikin 365 d 6 h Yana - .. A ake kira sidereal ko sidereal shekara. Domin m saukaka aka dauke su 365 days a shekara. "Plus," 6:00 4 shekaru ƙara har zuwa 24 hours, har yanzu akwai wata rana. Wadannan, sa'an nan (ya zo a guje, karin) rana da kuma kara zuwa Fabrairu kowane 4 years. Saboda haka, a cikin kalandar shekaru 3 hada da 365 days da wani tsalle shekara - shekara ta huɗu ta ƙunshi 366 kwanaki.

Duniya ta mallaka axis na juyawa ne karkata zuwa ga orbital jirgin sama a 66,5 °. A wannan batun, a lokacin shekarar da rana ta haskoki fada a kan kowane batu na duniya ta surface karkashin Cibiyar bubbled kusassari. Saboda haka, a daban-daban sau na shekara nuna daban-daban hemispheres ne a daya kuma lokaci guda, daban-daban yawa na haske da zafin rana. Saboda wannan, a cikin temperate latitudes, yanayi ne sharply furta. A lokaci guda, a ko'ina cikin shekara rana ta haskoki a ekweita fāɗi ƙasa a wannan kwana, don haka yanayi a can ne dan kadan daban-daban daga juna.

A lokacin rani solstice axis na Duniya na fuskantar arewacin karshen Sun, kuma ta haskoki fada perpendicularly a kan kamu da 23,5 °. Saboda haka, fara daga ekweita zuwa 66,5 °, rana zama ƙara na dare. Don arewa da latitud na 66,5 ° daraja iyakacin duniya rana.