Citazione Originariamente Scritto da David™ Visualizza Messaggio
Altamente improbabile, anche perché dovrebbe avere un'enorme densità per generare il campo magnetico terrestre...
si, a quanto ho letto (su wikipedia) sarebbe plasma denso come un solido:
It is not necessarily a solid, but, because it is able to deflect seismic waves, it must behave as a solid in some fashion. Experimental evidence has at times been critical of crystal models of the core.[10] Other experimental studies show a discrepancy under high pressure: diamond anvil (static) studies at core pressures yield melting temperatures that are approximately 2000 K below those from shock laser (dynamic) studies.[11][12] The laser studies create plasma,[13] and the results are suggestive that constraining inner core conditions will depend on whether the inner core is a solid or is a plasma with the density of a solid. This is an area of active research.