According to the ESA, “Our magnetic field is largely generated by an ocean of superheated, swirling liquid iron that makes up the outer core around 1,864 miles beneath our feet.

They may also use the Earth’s magnetic field, thanks to a sense known as magnetoreception. ... Dutch folk figure and early New York icon became the ubiquitous symbol of Christmas.

These rocks offer evidence that Earth had a strong magnetic field 3.7 billion years ago, but scientists aren't sure where that field could've come from. A 3.7-billion-year-old record of our planet ...

While the moon once had a weak magnetic field generated by a small molten core, the team's research suggests it likely wouldn't have been strong enough on its own to magnetize surface rocks.

The magnetic field has weakened 9% over the last 200 years. A weak spot in the southern Atlantic, which has grown bigger every year, has split in two.

For decades, scientists have been trying to understand why some rocks on the moon are strongly magnetized even though the moon has no magnetic field today. Moon rocks brought to Earth during NASA ...