When Did Mars Lose its Global Magnetic Field?
Science

Mars and its Global Magnetic Field?

According to a recent study, Like Earth, Mars's global magnetic field is believed to have been the result of a dynamo effect caused by an action in its core. However, rock samples that were taken from three large Basins – Hellas, Argyre, and Isidis – which formed 3.9 billion years ago – led most scientists to the conclusion that the dynamo was inactive by this time

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Fri May 08 - Universetoday

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