Wata ƙungiyar masana ilmin taurari a ƙarƙashin jagorancin Cibiyar Fasaha ta Massachusetts ta buga , inda ta ba da rahoton wani nasarar wani sabon aiki na neman duniyoyi a wajen tsarin hasken rana. Tauraron hangen nesa na Transiting Exoplanet Survey Tauraron Dan Adam (TESS), A ranar 18 ga Afrilu, 2018, ta gano ƙaramin abu a cikin ɗan gajeren aikinta na bincike - wataƙila wata duniya mai duwatsu kamar Duniyarmu.
Exoplanet HD 21749c yana kewaya tauraron HD 21749 tare da tsawon kimanin kwanaki 8. Tsarin HD 21749 yana da nisan shekaru 53 na haske. Tauraron yana ɗauke da kusan kashi 80% na nauyin Rana. Gajeren lokacin kewayar duniyar da ke kewaye da tauraron mai masaukin baki yana nufin zafin samanta zai iya wuce digiri 450 na Celsius. Rayuwa a kan irin wannan dutse mai zafi, kamar yadda muka san shi, ba zai yiwu ba. Duk da haka, wannan ba ya rage nasarar TESS ba. Hanyoyin bincike da kayan aiki za su ci gaba da bunƙasa, kuma masana ilmin taurari suna tsammanin samun duniyoyi da dama a yankin da ya dace da rayuwa a Duniya.
Ya kamata a lura cewa na'urar hangen nesa ta Kepler ta gano duniyoyi 2662 a cikin shekaru da yawa da ta yi tana aiki, waɗanda da yawa daga cikinsu na iya zama girman Duniya. Manufar TESS ta bambanta. TESS tana nazarin taurarin da ke kusa, tare da kayan aikin da ke ƙasa a Chile (Planet Finder Spectrograph, PFS), tana ba da damar tantance taro da ma yanayin sararin samaniya na duniyoyin da suka ɓace tare da wani matakin daidaito.
Cikin shekaru biyu, tawagar TESS tana shirin yin nazari kan tsarin taurari sama da 200,000. Masana kimiyya suna tsammanin wannan zai haifar da gano taurari sama da 50. Tauraron dan adam ya mamaye sama da kashi 90% na sararin samaniya tsawon kwanaki 13,5. Abin mamaki, an gano wani duniyar waje, HD 21749b, a cikin tsarin HD 21749. Duk da haka, an rarraba wannan jikin sama a matsayin "sub-Neptune," kuma TESS ta riga ta gano irin waɗannan abubuwa da yawa.
source: 3dnews.ru
