Mercury yana daya daga cikin hudu duniya taurari a cikin Solar System, kuma shi ne mai dutsen jiki kamar Duniya. Shi ne mafi karami duniya a cikin Solar System, tare da equatorial radius na 2,439.7 kilomita (1,516.0 mi). Mercury ne kuma karami<unk>albeit mafi m<unk>than da mafi girma na halitta taurari a cikin Solar System, Ganymede da Titan. Mercury ta kunshi kimanin 70% karfe da kuma 30% silicate abu. Mercury ta yawa ne na biyu mafi girma a cikin Solar System a 5.427 g / cm3, kawai dan kadan kasa da Duniya ta yawa daga 5.515 g / cm3.
Mercury