Malingaliro akale a dongosolo la dzuŵa anaphwanyidwa kukhala fumbi
Palinso nkhani zina zomwe zimanenedwa ndi miyala ya dzuwa. Pa Madzulo a Chaka Chatsopano kuyambira 2015 mpaka 2016, meteor ya 1,6 kg inagunda pafupi ndi Katya Tanda Lake Air ku Australia. Asayansi atha kuzifufuza ndikuzipeza m'madera ambiri achipululu chifukwa cha makina atsopano amakamera otchedwa Desert Fireball Network, omwe ali ndi makamera 32 omwe amwazikana kumadera akumidzi aku Australia.
Gulu la asayansi linapeza meteorite yokwiriridwa mumatope a mchere wambiri - pansi pa nyanjayo panayamba kusanduka dothi chifukwa cha mvula. Pambuyo maphunziro koyambirira, asayansi ananena kuti ichi ndi stony chondrite meteorite - zakuthupi za 4 ndi theka zaka biliyoni, ndiko kuti, nthawi mapangidwe dzuwa lathu. Tanthauzo la meteorite ndi lofunika chifukwa popenda mzere wa kugwa kwa chinthu, tikhoza kusanthula kanjira kake ndi kupeza komwe idachokera. Mtundu wa data uwu umapereka chidziwitso chofunikira pa kafukufuku wamtsogolo.
Pakadali pano, asayansi atsimikiza kuti meteor idawulukira padziko lapansi kuchokera kumadera apakati pa Mars ndi Jupiter. Amakhulupiriranso kuti ndi yakale kwambiri kuposa Dziko Lapansi. Kupezako sikumangotipatsa mwayi womvetsetsa chisinthiko Dongosolo la dzuwa - Kudumpha bwino kwa meteorite kumapereka chiyembekezo chopeza miyala yochulukirapo mwanjira yomweyo. Mizere ya mphamvu ya maginito inadutsa mumtambo wa fumbi ndi mpweya umene unazungulira dzuŵa limene poyamba linabadwa. Chondrules, mbewu zozungulira (zomangamanga za geological) za olivine ndi pyroxenes, zomwazika pankhani ya meteorite yomwe tidapeza, zasunga mbiri ya maginito akale osiyanasiyana.
Miyezo yolondola kwambiri ya ma laboratory imasonyeza kuti chinthu chachikulu chimene chinalimbikitsa kupanga dongosolo la dzuŵa chinali mafunde amphamvu a maginito mumtambo wa fumbi ndi mpweya wozungulira dzuŵa lopangidwa kumene. Ndipo izi sizinachitike pafupi ndi nyenyeziyo, koma zambiri - kumene lamba wa asteroid lero. Malingaliro otere kuchokera ku kafukufuku wakale kwambiri komanso wakale wotchedwa meteorites chondrites, lofalitsidwa kumapeto kwa chaka chatha m'magazini ya Science ndi asayansi ochokera ku Massachusetts Institute of Technology ndi Arizona State University.
Gulu lofufuza zapadziko lonse lapansi latulutsa zidziwitso zatsopano zokhuza kapangidwe kake ka fumbi komwe kunapanga solar system zaka 4,5 biliyoni zapitazo, osati kuchokera ku zinyalala zakale, koma pogwiritsa ntchito makina apamwamba a makompyuta. Ofufuza a Swinburne University of Technology ku Melbourne ndi University of Lyon ku France apanga mapu amitundu iwiri ya mankhwala a fumbi omwe amapanga nebula ya dzuwa. fumbi disk kuzungulira dzuwa laling'ono lomwe mapulaneti adapanga.
Zinthu zotentha kwambiri zinkayembekezeredwa kuti zikhale pafupi ndi dzuwa laling'ono, pamene kutentha (monga madzi oundana ndi sulfure) kumayenera kukhala kutali ndi dzuwa, kumene kutentha kumakhala kochepa. Mapu atsopano omwe adapangidwa ndi gulu lofufuza adawonetsa kugawa kwamankhwala kovuta kwa fumbi, komwe zinthu zosasunthika zinali pafupi ndi Dzuwa, ndipo omwe amayenera kupezeka pamenepo adakhalanso kutali ndi nyenyezi yachichepere.
Jupiter ndiye woyeretsa wamkulu
9. Chitsanzo cha Chiphunzitso cha Jupiter Yosamuka
Lingaliro lotchulidwa kale la Jupiter wamng'ono wosuntha likhoza kufotokoza chifukwa chake palibe mapulaneti pakati pa Dzuwa ndi Mercury komanso chifukwa chake pulaneti yapafupi kwambiri ndi Dzuwa ndi yaying'ono. Pakatikati pa Jupiter mwina adapanga pafupi ndi Dzuwa ndiyeno amanjenjemera m'dera lomwe mapulaneti amiyala adapanga (9). N’kutheka kuti Jupiter wachichepereyo, pamene ankayenda, anamwetsa zina mwa zinthu zimene zingakhale zomangira mapulaneti amiyala, n’kuponya mbali ina m’mlengalenga. Choncho, kukula kwa mapulaneti amkati kunali kovuta - chifukwa cha kusowa kwa zipangizo., analemba wasayansi ya mapulaneti Sean Raymond ndi anzake pa intaneti March 5 nkhani. m’magazini a Monthly Notices of the Royal Astronomical Society.
Raymond ndi gulu lake adayendetsa zoyeserera zamakompyuta kuti awone zomwe zingachitike mkati Dongosolo la dzuwangati thupi lokhala ndi unyinji wa misa itatu yapadziko lapansi lidakhalapo munjira ya Mercury ndikusamukira kunja kwa dongosolo. Zinapezeka kuti ngati chinthu choterocho sichinasamuke mofulumira kapena pang'onopang'ono, chikhoza kuchotsa zigawo zamkati za diski ya gasi ndi fumbi zomwe zinazungulira Dzuwa, ndikusiya zinthu zokwanira kupanga mapulaneti a miyala.
Ofufuzawo adapezanso kuti Jupiter wachichepere akanatha kuyambitsa pachimake chachiwiri chomwe chinatulutsidwa ndi Dzuwa panthawi yakusamuka kwa Jupiter. Khungu lachiwirili likhoza kukhala mbewu yomwe Saturn inabadwira. Mphamvu yokoka ya Jupiter imathanso kukoka zinthu zambiri mu lamba wa asteroid. Raymond ananena kuti zochitika ngati zimenezi zikhoza kufotokoza mmene ma meteorite achitsulo amapangidwira, omwe asayansi ambiri amakhulupirira kuti ayenera kupangidwa moyandikana kwambiri ndi Dzuwa.
Komabe, kuti proto-Jupiter yotere asamukire kumadera akunja a dongosolo la mapulaneti, mwayi wambiri umafunika. Kugwirizana kwa mphamvu yokoka ndi mafunde ozungulira mu diski yozungulira Dzuwa kumatha kufulumizitsa pulaneti yotere kunja ndi mkati mwa solar. Liwiro, mtunda ndi komwe dziko lidzayendere zimadalira kuchuluka kwa kutentha ndi kachulukidwe ka disk. Zoyeserera za Raymond ndi anzawo zimagwiritsa ntchito disk yophweka kwambiri, ndipo pasakhale mtambo woyambirira kuzungulira Dzuwa.
