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JamesCardwell92 t1_iu31wle wrote

Reply to comment by DrFlukey in Magma on Mars Likely - Until now, Mars has been generally considered a geologically dead planet. An international team of researchers led by ETH Zurich now reports that seismic signals indicate volcanism still plays an active role in shaping the Martian surface. by GeoGeoGeoGeo

Might be geologically active internally but not have the right metals in the core to generate magnetic field.

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Oshino_Meme t1_iu3nkh1 wrote

It’s got enough iron it’s just not got a dynamo going currently, you need to generate convection currents to get a nice stable field going

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drbart t1_iu3dzhv wrote

So .. maybe there was never a magnetic field? Do we need a different theory about how Mars lost most of its atmosphere?

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