UPDATE: (Science Alert) – New satellite data from the European Space Agency (ESA) reveal that the mysterious anomaly weakening Earth’s magnetic field continues to evolve, with the most recent observations showing we could soon be dealing with more than one of these strange phenomena. The South Atlantic Anomaly is a vast expanse of reduced magnetic […]
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How do magnets work? What is a magnetic field? A magnet is an object that has a magnetic field strong enough to influence other materials. The molecules in a magnet are aligned to all face one way, which gives the magnet its magnetic field. Read on for everything you need to know.
Earth's magnetic field, which protects the planet from harmful blasts of solar radiation, is much older than scientists had previously thought. This invisible, protective shield likely existed shortly after the planet formed; a finding that could shed light on why Earth is habitable and Mars is not. Earth's magnetic field helped make life on the planet possible. Without our magnetic field, solar winds would strip away the planet's atmosphere and oceans.