A new study disputes the prevailing hypothesis on why Mercury has a big core relative to its mantle. For decades, scientists argued that hit-and-run collisions blew away much of Mercury's rocky mantle and left the big, dense, metal core inside. But new research reveals that collisions are not to blame -- instead, the density, mass and iron content of a rocky planet's core is influenced by its distance from the sun's magnetic field.
from Top Technology News -- ScienceDaily https://ift.tt/36bASiw
Saturday, 3 July 2021
Why does Mercury have such a big iron core? Magnetism!
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