HERITAGE DAILY Mercury has solid inner core

CONTEXT:

  • The smallest planet in our solar system, Mercury, has a massive solid inner core.
  • Mercury has a solid inner core about 2,000 kilometers in diameter, making up about half of Mercury’s entire core.
  • The planet has a weak magnetic field generated by circulation of molten metal in that liquid core.
  • The solid inner core makes up about half of the total core. The entire core is 85% of the planet.
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