Imithala namaluko
Eduze kwethu nje, ngezinga le-cosmic, okungukuthi, emaphethelweni e-Milky Way, kutholwe umthala okungenzeka ukuthi unokuqukethwe okukhulu kwezinto ezimnyama, okudala amathuba okubuka kwawo kusenesikhathi. Ngesikhathi esifanayo, kwavela ukuthi izinto ezimnyama zingase zisondele nakakhulu, ngisho nangaphakathi kwebanga, ngoba, njengoba uGary Preso, umcwaningi we-NASA's Jet Propulsion Laboratory, asikisela, uMhlaba "unama-braids" wendaba emnyama.
Umthala oku-Triangulum II ukwakheka okuncane okuqukethe izinkanyezi ezingaba yinkulungwane kuphela. Nokho, ososayensi baseCaltech Institute basola ukuthi kunento emnyama engaqondakali efihlwe kuyo. Wavelaphi lo mcabango? U-Evan Kirby weCaltech okukhulunywe ngayo ngenhla unqume ubukhulu balo mthala ngokukala isivinini sezinkanyezi eziyisithupha ezizungeza indawo ephakathi nendawo esebenzisa i-Keck Telescope engamamitha ayi-10. Ubuningi bomthala, obubalwa kusukela kulokhu kunyakaza, bube bukhulu kakhulu kunesisindo esiphelele sezinkanyezi, okusho ukuthi umthala cishe uqukethe izinto eziningi ezimnyama.
Kulesi simo, umthala we-Triangulum II ungase ube okuhlosiwe okuyinhloko nendawo yokufunda. Inalokhu, phakathi kwezinye izinto, inzuzo yokuba seduze nathi. I-WIMP (Weakly Interacting Massive Particles), okungenye yezindlela eziyinhloko zokuhlonza izinto ezimnyama, kungenzeka ukuthi ibonakale kuyo kalula, njengoba iwumthala “ozolile,” ngaphandle kweminye imithombo eqinile yemisebe engase ithathwe ngephutha njenge-WIMP. Ngakolunye uhlangothi, izimangalo zikaPreso zisekelwe enkolelweni yamuva nje yokuthi izinto ezimnyama ezisemkhathini zisesimweni “samajethi amahle” ezinhlayiya ezigcwele emkhathini. Le mifudlana yezinhlayiya zezinto ezimnyama ezingavamile azikwazi ukudlulela ngale kwesimiso sonozungezilanga, kodwa futhi zidlule imingcele yemithala.
Ngakho-ke, lapho uMhlaba uwela imifudlana enjalo phakathi nohambo lwawo, amandla adonsela phansi ayabathinta, abenze babukeke njengezinwele ezinama-bulb akhula emhlabeni wethu. Ngokusho kososayensi, zikhula zisuka endaweni enweba amakhilomitha ayisigidi ngaphezu komhlaba. Ngokubona kwakhe, uma singakwazi ukulandelela indawo yalezo "follicles zezinwele", ama-probe ocwaningo angathunyelwa lapho, anganikeza idatha ngezinhlayiya esingasazi lutho ngazo. Mhlawumbe okungcono kakhulu kungaba ukuthumela ikhamera ku-orbit ezungeze i-Jupiter, lapho "izinwele" ezimnyama zingaba khona ngendlela eqine kakhulu.
