'In Earth's history, this field has flipped over many times switching its north & south poles'
Magnetic field
IT'S A WEIRD WORLD: In Earths history, this field has flipped over many times switching its north & south poles
In Earth's history, this field has flipped over many times switching its north & south poles
In Earth's history, this field has flipped over many times switching its north & south poles
IT'S A WEIRD WORLD
Magnetic field
IT'S A WEIRD WORLD