U fiirso qoraalka hoose ka dibna ka jawaab su'aasha kadib isla luqadda qoraalka:  Geedi socodka: 20-kii Diseembar, 2011, kooxda Kepler Space Telescope waxay soo warrameen helitaanka nidaam shan meeraha ah oo ay ku jiraan saddex gaas oo yar yar iyo labada meeraha ugu horreeya ee dhulka ka baxsan, Kepler-20e (meeraha ugu horreeya ee la yaqaan ee ka yar Dhulka oo ku wareegsan xiddig taxane ah) iyo Kepler-20f, oo ku wareegsan xiddig sida Sun. Inkastoo meeraha ay yihiin sida dhulka oo kale, haddana ma aha sida dhulka oo kale marka loo eego in ay aad ugu dhow yihiin xiddiggooda marka loo eego dhulka, sidaa darteedna aysan u dhowaanayn aagga la degganaan karo, iyadoo la filayo heerkulka dusha sare ee 760 °C iyo 427 °C. Saddexda meeraha kale ee Neptune-ka ah ee nidaamka ku jira, Kepler-20b, Kepler-20c, iyo Kepler-20d, dhammaantood waxay si isku mid ah ugu wareegsan yihiin xiddigga. Kepler-20g waa meeraha ka baxsan meeraha oo aan soo marin oo ku wareegaya Kepler-20.  Su'aal: imisa meerayaal oo cabirka dhulkeena le'eg ayaa laga helay Kepler Space Telescope 20-kii December, 2011?
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