Maganin magnetic-field a Mercury ta equator ne game da 300 nT. Kamar na Duniya, Mercury ta Magnetic filin ne dipolar. Ba kamar na Duniya, Mercury ta sandunan ne kusan aligned tare da duniya ta juya axis. Aunawa daga duka biyu da Mariner 10 da kuma MESSENGER sarari bincike sun nuna cewa da karfi da kuma siffar da Magnetic filin ne barga. Yana yiwuwa cewa wannan Magnetic filin da aka generated da wani dynamo sakamako, a cikin wani iri kama da Magnetic filin na Duniya. Wannan zai haifar da daga cikin duniya ta baƙin ƙarfe-arziki, kuma a fili duniya, Magnetic filin ƙarfi ne game da 1.1% na Duniya. Magnetic filin ƙarfi a Mercury ta equator ne game da 300 nT. Kamar na Duniya, Mercury ta Magnetic filin ne dipolar.
Mariner 10