Mid ka mid ah aragtida, la daabacay 1999 iyo dib-u-baaro October 2005 (oo ay caawimaad ka Mars Global Surveyor), waa in bandhigyada kuwan soo jeedin dhaqdhaqaaqa tectonic saxan on Mars afar bilyan oo sano ka hor, ka hor inta dynamo meeraha joojiyay inuu shaqeeyo iyo meeraha magnetic meeraha fadhiistay. Waxaa loo maleynayaa in, inta lagu guda jiro sameynta Solar System ee, Mars waxaa la abuuray oo ay sabab u ah habka a socday of accretion dabayl weyn oo ka disk qorraxda protoplanetary in orbited Sun, oo soo jeedinaya in beddelaad polarity beddelaad ay dhacday ee ay field dipole ee la soo maray ee la soo dhaafay. paleomagnetism Tani ee macdanta magnetically u nugul waa la mid ah bandhigyada beddelaad laga helay on dhulka ee badda dhulka.
6,600 lagu dhuftay 5,300