Formation, Sayniska
Mass dhulka. gabaynayo ee aragtida ah ee caalamka lagu ballaariyo
Sida laga soo xigtay xisaabinta ah sumalka uguma soo dhaafay, mass dhulka waa 5,97 × 10 24 kiilo. Cabirka Annual of magnitude this si cad u muujiyaan in aysan gabi ahaanba waa joogto ah. xogta ay u dhaxayn ilaa 50 kun oo tan oo sanadkiiba. Earth waa ugu weyn ee ugu weyn dhexroor, mass iyo cufnaanta ka mid ah meerayaasha ay leeyihiin kuwa dhulkuna. Muddo nidaamka qoraxda, saddexaad caalamka ka Sun iyo shanaad ee size ka mid ah dadka kale oo dhan. Waxaa guuro kastana falagiisuu dhex elliptical agagaarka Sun ee ka fog celcelis ahaan 149,6 milyan oo kiiloomitir.
Tan iyo baaxada dhulka la beddelo, waxaa jira fikrado badan oo ku saabsan isbeddellada isbedeladan. Dhinaca mid, qiimaha this si joogto ah u kordhiyaa ay sabab u tahay isku dhaceen la meteorites in jawiga gubanaya, ka tago xaddi weyn oo ciidda shubo caalamka. Dhinaca kale, shucaaca ka dhaca loolalka sare si joogto ah jajabiyaa taagoo biyo sare jawiga, galay oxygen iyo hydrogen. Qayb ka mid ah hydrogen ay sabab u tahay culeyska iftiinkooda waa loo saaray ka duurka ku gravitational ee caalamka in ay saamayn doonaan miisaan.
Tan iyo bilowgii qarnigii 19aad in ay labaatankii sano ee la soo dhaafay ee aragtida ah qarnigii 20aad ee Dhulka ballaarinta waxa uu ka mid saynisyahano adduunka oo aad loo jecel yahay. xiqiijiyay ah in la kordhiyo mugga caalamka ayaa sababay in wararka la isla dhexmarayo ayaa sidoo kale waxay kordhisaa mass ee Dhulka. Inta lagu jiro jiritaanka oo dhan aragti ah shan saynisyahano kala duwan ka baran fursadaha waxaa la soo jeediyay. cilmi badan oo caan ah sida Kropotkin, Milanovsky, Steiner iyo Schneider, ayaa ku dooday ballaarinta dunida isbedbedelka ay meerto. Dakill, Myers, Clube oo Napier sharaxay malo this waxaa si joogto ah ku xiran dunida meteorites iyo astiriyoodhada. The aragtida ugu caansan ee ballaarinta la isla dhexmarayay in xudunta u ah asalka ah ee dhulkeenna ka koobnayd arrinta superdense, taas oo ah in geeddi-socodka ah ee horumar galay wax caadi ah u soo jeestay, taasoo keenta ballaarinta tartiibta ah ee dhulka. In 50-kii sano ee la soo dhaafay ee qarnigii la soo dhaafay, dhowr physicists qudbad sida Dirac, Urdun, Dicke, Ivanenko iyo Saggitov, ayaa muujiyay aragtida ah in cuf hoos waqti, iyo waxay keenaysaa in ballaarinta a dabiiciga ah ee caalamka. xiqiijiyay in kale waxa uu ahaa fikir ah Kirillov Neumann Blinov iyo Veselova in la ballaariyo dhulka ay keentay sababo la xiriira cosmological kororka da'da jir ah evolutionary in ay miisaan. Maanta, xaddi weyn oo cadaymo ku doodeen fikrado kuwan.
Fikradda ah la ballaariyo ah ee caalamka, oo ku salaysan xaqiiqada ah in tiro ka mid ah Dhulka waxaa si joogto ah kordhaya, hadda ugu dambeyntii laga badiyay ay racfaan. Kooxda Caalamiga ah, ka kooban oo ka mid ah cilmibaadhe oo adduunka ugu fiican, ugu dambeyntii xaqiijiyey in, sidaas maanta, fikrad this si nabad ah u tegi kartaa on shelf ee archives sayniska.
Sida laga soo xigtay gabagabeeyo kooxda geophysicists yaa sameeyay daraasadda iyadoo la kaashanayo meel baabuurta oo casri ah, mass of Earth meeraha waa yara joogto. shaqaale ka tirsan mid ka mid ah shaybaarada cilmi W. Xiaoping iyo saaxiibtiis ku daabacay maqaal taas oo uu ku sheegay in is beddel go'an gacan dhulka ha laga gudbo 0.1 mm (dhumucda timaha a aadanaha) sanadkii. Kuwani tirakoobka ayaa tilmaamaya in mass ee Earth aysan waxba ka beddelin ee qiyamka ay u ogolaadaan in laga hadlo ballaarinta.
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