Uyini lo engaba Umhlaba

Ezisesimisweni sethu sikanozungezilanga, kukhona eziyisishiyagalolunye, noma, uma kubhekwa sivumelwano zakamuva imvelo yesayensi, eziyisishiyagalombili amaplanethi (Pluto ukuthi ophucwa isihloko zokuhlonipha ngo-2006). Phakathi kwabo, ukunakekela okukhethekile kufanele ikhokhwe iplanethi sesithathu - Earth. Sici Its ezibaluleke kakhulu, eyaziwa zonke wesikole - yikhono ukulondoloza ukuphila okulula futhi ehleleke kakhulu. Umnyaka elilinganisiwe planethi iminyaka engaphezu kwezinkulungwane zezigidi 4, okuyinto uhambisane imfundiso yokuziphendukela iplanethi ukwakheka kusuka ifu igesi ezungeze ilanga.

Kunezindlela eziningana izici ezibalulekile, okuyinto kumele batetayete wonke umuntu wanquma phezulu ulwazi lwabo mayelana iplanethi yabo ekhaya. Kuleli phephandaba, sizobe ukumboza kulezi zici.

Kusukela ekuqaleni ababecabanga yezinkanyezi solar system izinto futhi ukuqashelwa zomphakathi imodeli heliocentric wendawo yonke kwakuyindaba engathí sina kakhulu ulinganise amabanga emkhathini. Ordinary izilinganiso "eliwumhlaba" (amamitha, amamayela) asifanele lo msebenzi. Kuyaphawuleka ukuthi, nakuba ibanga ukusuka Earth Moon kwakuvele kwaziwa ekhulwini le-17, kwakubonakala enganele ngokwenza iyunithi. Ngesikhathi esifanayo, ngoba ilanga njalo maphakathi uhlelo, futhi kwababukele - at elifanayo kuwo (Yiqiniso, libhekisela okwashiwo ebusweni iplanethi), senziwa isinqumo esinengqondo - ukwamukela i iyunithi amabanga cosmic engaba nomjikelezo woMhlaba. Khona-ke yonke into ilula: Umzila wokuzungeza planethi useduze isiyingi enhle, ngakho iphutha nesilinganiso incane. Okwamanje, ibanga ukusuka emhlabeni ukuya elangeni million 149,59. Km futhi ubizwa ngokuthi "iyunithi yezinkanyezi" (AU). Unyaka ngamunye, ukwehla esinqunyiwe solar izithelo zawo mass ka-15 cm Kusukela ngenhla, singakwazi ukubala ibanga ukusuka elangeni ukuze Pluto -. 39,4 AU njll

Uyini lo engaba Earth, wonke umuntu uyazi. Izwi "Earth indilinga" manje uphawu isikhathi, njengoba kuqhathaniswa izinkolelo zasendulo ukuma flat. Ngakho, lo engaba isilinganiso 6371 km. Nokho, lesi silinganiso akuyona ngempela kuyiqiniso. Njengoba ayaziwa ngenxa emthambekeni-eksisi yomhlaba lubonakala ngaso sonke isikhathi-pole semali iqhwa (okubizwa ngokuthi "polar yiqhwa"). Ngenxa yabo, kukhona uhlelo lokuhlelwa kabusha mass kule planethi kanye engaba Zomhlaba, kulinganiswa-pole kuhlukile inani layo enkabazwe. Ukunemba kuqhathaniswa encane, kodwa. Ngokwesibonelo, lo engaba bhé somhlaba 6378,1 km, kodwa polar kuyinto 6356,8 km. Ngaphezu kwalokho, eminyakeni yamuva kuye kwaba nezinguquko ngokuphathelene izigxobo kubangelwa anomalies sezulu. Ngakho kusukela osekushiwo ukuthi impendulo yombuzo othi "Yini ilingane engaba Ngomhlaba?", Kubalulekile ukucacisa lokho ncamashi ehloselwe nesilinganiso. Kuphela kulesi simo kungenzeka ukunikeza impendulo eqondile.

Bambalwa abantu bazi ukuthi khona satellite iplanethi yethu yemvelo - Moon - wayengathi ngokungaqondile ezithinta engaba eMhlabeni. Ngokusho kwenye hypothesis, ngendlela efanele usaqala sonozungezilanga yayo nomjikelezo woMhlaba nabanye planetoid elikhulu elilingana 10% usayizi Mares nesisindo emhlabeni. Uma lokhu iplanethi yezinto (Theia) ishayisane Earth. Ngenxa isisindo salo waphonswa orbit, obumba inyanga, futhi insali wawuyingxenye umhlaba ngenxa "izithasiselo" enjalo engaba okwandisa. Okunye izazi ezivelele baphikisa ngokuthi ukushayisana iphutha endleleni tangent ekubhujisweni ngakho Teyi ilandelwe. Kulokhu, inyanga ingxenye yezwe, stranded uzungeza emzileni isiyingi. Ngakwelinye engaba, ngenxa yezizathu ezisobala, ayizange yanda, kodwa kwehle.

Njengoba singabona, ngezinye izikhathi esibonakala singenakwenzeka ukunikeza izimpendulo eziqondile emibuzweni elula. Njengoba Pascal wathi, "Into yolwazi akupheli."