Rana ce tauraro, babban ball mai zafi, wanda yake a nesa nesa daga duniyarmu. A sararin sama, da alama babban kankanta ne kuma ba mai sauƙin tunanin yadda wannan "ball" ya huso wa ƙasar ba. Labari ne game da nesa, saboda a zahiri rana shine ɗaruruwan sau ɗaruraya.
Ta yaya nesa daga ƙasa zuwa rana ta auna?
Don gano ainihin nisan zuwa rana, tsoffin Helenawa sun yi ƙoƙari, wanda bai yi nasara ba, tunda hanyoyin sasantawa sun yi mahimmanci. Failsan Farko sun sami damar ƙaddamar da Cassini da Rariher a 1672. Kallon matsayin Mars da kuma amfani da ƙididdigar geometric, sun saita kimanin Digiri - Km miliyan 139.
A karo na biyu na karni na XX, masana kimiya sun yi amfani da hanyar radar. Asalinsa ya ta'allaka ne a cikin watsawa na bugun jini - wanda aka nuna daga gare shi, yana dawowa baya. Dangane da bayanan, abin da lokaci yake faruwa daga ƙasa zuwa rana da baya, ana yin ƙarin daidaito.
Don auna sararin samaniya, irin wannan ƙimar kamar yadda aka yi amfani da shi da hasken rana. Shekarar haske shine nisa da hasken ya mamaye shekara 1 sama da shekara 1 ". Saurin haske shine kimanin miliyan 300 na M / S, kuma 1 haske shekara daidai yake da 9,46073047 × 1012 km.
Gaskiya mai ban sha'awa: Distance daga rana zuwa ƙasa zuwa ƙasa shine minti takwas masu sauƙi. Yana da yawa lokaci da kuke buƙatar hasken rana don cimma nasararmu.
Ainihin nisan daga rana zuwa duniya shine kilomi miliyan 150. Abin da ke ban sha'awa, wannan mai nuna alama yana canzawa a cikin shekarar, kamar yadda orbit na duniyarmu tana da fom ɗin ellipsoid. A watan Yuli, yana da miliyan 152 kilomita, kuma a cikin Janairu - Km miliyan 147.
Wadanne abubuwa ne na iya shafar duniya?
Don kimanta canji a nesa tsakanin duniya da rana na dogon lokaci ya fi wahala. Saboda haka, masana kimiyya suna gina ka'idoji da ƙirar daban-daban na bambance-bambancen abubuwan da suka faru.
Kowace shekara, an cire duniyarmu daga rana ta kusan 1.5 cm. Akwai tasirin da yawa. Gythumenis na nukiliya, wanda ya faru a rana. Gaskiyar ita ce tare da kowane ɗayan na biyu sakamakon wannan tsari, ya rasa kusan tan 4,000,000 na taro. Don irin wannan babban jiki na sama, wannan ƙaramin mai nuna alama ne, amma a hankali yana kara ƙasa orbit.
A farkon matakan wanzuwa, rana ta kewaye ta da diski mai bayyana (gyasuo). Yanzu duniya tana fuskantar waɗannan sassan abu, wanda kuma ya shafi ingin ta, yana canzawa kusan kan girman Pronon (1 femometre ko 10-15 m).
Yana shafar nauyi na duniya, abubuwa daban-daban a cikin tsarin hasken rana. Kowace daga cikin wadannan jikin da ya shafi sararin samaniya yana da wani tabbataccen jan hankali. Akwai damar da maharan data sojojin na iya shafar canjin kewayawa.
Rana babu makawa ga makomar canji zuwa ja mai girma. Lokacin da ta faru, kwaya za ta yi girma har ma da ƙarfi, harsashi mai ƙarewa zai karu sosai a cikin girman kuma tsarin Helium Synthesis zai fara. Wato, rana zata fara haskaka da makamashi.
Zama babban tauraro ja, zai lalata wasu duniyoyi. Misali, Venus da Mercury na iya ɓacewa. Watanmu na iya zama tare da su, amma tabbas a matsayin zai halaka. A saboda wannan, ya kamata a cire ƙasa gaba ɗaya daga rana - kimanin 15% kuma ƙarin radius na yanzu.
Gaskiya mai ban sha'awa: Shekarun Rana ne kimanin shekaru biliyan 46. Labari ne game da tsakiyar yanayin rayuwarsa.
Sauran jikin Galactic kuma zasu iya shafar kawuna duniya, sanya shi m. Wani lokaci waɗannan abubuwan suna faruwa kusa da tsarin duniyarmu - wannan na faruwa matuƙar wuya. Rashin daidaituwa na orbit ya yi barazanar motsi na duniyar har sai fita da galaxy.
Idan ƙasa ta tsira daga girgizar rana cikin ja mai ban tsoro, za ta kasance "daure". Haka kuma, duniyarmu za ta fara rage nisa zuwa rana. Wannan zai shafi radawa na gyarawa. Ka'idar Einstein ta ce talakawa biyu, a cikin intrit suna jujjuyawa juna, samar da raƙuman ruwa na kiwo.
Masana kimiyya suna ɗaukar abin da zai yiwu da yawa waɗanda ke shafar ƙasa orbit da nisa tsakanin rana da duniyarmu. Zuwa yau, babban tasiri yana da tsarin nukiliya wanda ke faruwa a rana. Hakanan, kewayon duniya na iya canzawa sakamakon rashin hankali na gari, canjin rana a cikin ja mai girma. Mafi kusancin shine tabbataccen sha na duniya da rana a shekarun biliyan ɗaya.
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