NASA, MAVEN Magnetometer
When you navigate with a compass you can orient yourself thanks to Earth s global magnetic field. But on Mars, if you were to walk around with a compass it would haphazardly point from one anomaly to another, because the Red Planet does not possess a global magnetosphere. Scientists think that this lack of a protective magnetic field may have allowed the solar wind to strip away the Martian atmosphere over billions of years, and now NASA s MAVEN spacecraft will study this process in detail with its pair of
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