Mercury waa mid ka mid ah afarta meerayaasha dhulka ee Solar System, iyo waa jir dhagax ah sida Earth. Waa meeraha ugu yar ee Solar System, la radius Equatorial of 2,439.7 kiiloomitir (1,516.0 mi). Mercury sidoo kale waa yar yar <unk> inkastoo more massful <unk> ka badan dayax gacmeedyada ugu weyn ee dabiiciga ah ee Solar System, Ganymede iyo Titan. Mercury ka kooban yahay qiyaastii 70% biraha iyo 30% qalabka silicate. cufnaanta Mercury waa labaad ee ugu sareeya ee Solar System ee 5.427 g / cm3, kaliya wax yar ka yar cufnaanta Earth ee 5.515 g / cm3.
Kiimikada