Iplanethi efana nomhlaba ekhoneni
Izazi zezinkanyezi ezisebenza eqenjini ezisebenzisa izibonakude ze-ESO kanye nezinye izindawo zokubuka izinto zithole ubufakazi obucacile beplanethi ezungeza inkanyezi eseduze kakhulu nesimiso sonozungezilanga, i-Proxima Centauri, "kuphela" iminyaka engaphezudlwana kwemine yokukhanya ukusuka eMhlabeni.
I-Exoplanet, manje eqokwe njenge I-Proxima Centavra b, izungeza i-dwarf epholile ebomvu ezinsukwini eziyi-11,2 futhi ibonwe inezinga lokushisa elingaphezulu elifanele ukuba khona kwamanzi awuketshezi. Ososayensi bakubheka njengesimo esidingekayo sokuvela nokugcinwa kwempilo.
Lo mhlaba omusha othakazelisayo, izazi zezinkanyezi ezibhala ngawo kumagazini ka-August wephephabhuku i-Nature, uyiplanethi enkulu kancane kunoMhlaba kanye ne-exoplanet eseduze kakhulu esiyaziyo. Inkanyezi ephethe i-Sun ingu-12% kuphela ubukhulu beLanga, u-0,1% wokukhanya kwayo, futhi siyazi ukuthi iyavutha. Ingase iboshwe ngamandla adonsela phansi ezinkanyezini i-Alpha Centauri A no-B, eziqhele ngamamitha angu-15. amayunithi ezinkanyezi ((iyunithi yezinkanyezi - cishe isigidi esingu-150 km).
Ezinyangeni zokuqala zika-2016, u-Proxima Centauri wabonwa kusetshenziswa i-spectrograph ye-HARPS, esebenza ngokubambisana ne-ESO 3,6-metres telescope e-La Silla Observatory eChile. Inkanyezi yafundwa kanyekanye ngezinye izibonakude emhlabeni jikelele. Wonke lo mkhankaso wokuhlola ubuyingxenye yephrojekthi ebizwa ngokuthi i-Pale Red Dot. Ithimba lezazi zezinkanyezi eliholwa uGuillem Anglada-Eskud waseQueen Mary University eLondon liqophe ukushintshashintsha okuncane kwemigqa yokukhipha izinto ezibukwayo zalesi nkanyezi, okubangelwa yilokho okukholelwa ukuthi amandla adonsela phansi. ukudonsa kweplanethi ejikelezayo.
