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When Earth's solid inner core formed: 1 to 1.5 billion years ago

By A Mystery Man Writer

Our planet's magnetic field is the first and ultimate shield that guards life from the elements of space, particularly radiation.

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

When Earth's solid inner core formed: 1 to 1.5 billion years ago

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science

When Earth's solid inner core formed: 1 to 1.5 billion years ago

Tibi Puiu -- author profile on ZME Science