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Magnetic memories of a metal world

4.5 billion years ago in the violent, high-speed environment of the early solar system, a protoplanet roughly the size of Mars was involved in a series of fierce collisions with other large planetary bodies.

date14 hours ago in Space Exploration
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Probing the possibility of life on super-Earths

Along with its aesthetic function of helping create the glorious Aurora Borealis, or Northern Lights, the powerful magnetic field surrounding our planet has a fairly important practical value as well: It makes life possible.

dateJun 19, 2017 in Astronomy
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