Planetary Magnetic Fields: Neptune

  • Neptune rotates with a period of about 16 hours
  • A magnetic field was detected by the Voyager spacecraft as it passed by the planet, so again this indicates that Neptune, too, has a fluid, cnducting core
  • Neptune's magnetic field is about 25 times stronger than Earth’s

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  • Like Uranus, Neptune's magnetic axis is inclined 50o to rotation axis
  • Again, like Uranus, the magnetic axis is offset 10,000km from the planet's core (by 25% of radius)

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