Some bacterial species possess an astonishing ability: They use Earth's magnetic field to orient themselves. To better ...

Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

For years, scientists noticed that magnetic fields could improve steel, but no one knew exactly why. New simulations reveal that magnetism changes how iron atoms behave, making it harder for carbon ...

Like Earth, Mars once had a strong magnetic field that shielded its thick atmosphere from the solar wind. But now only the magnetic imprint remains. What's long baffled scientists, though, is why this ...

Earth’s magnetic field can linger in a weakened, unstable state for tens of thousands of years before fully flipping.

Aaron Rossini of Iowa State and Ames National Laboratory with the nuclear magnetic resonance instrument in his Hach Hall lab. Iowa State ...

Understand the magnetic field of two long wires with this detailed physics example! Learn how currents interact, how to calculate the resulting magnetic field, and visualize the principles behind ...

Earth's magnetic field dramatically flipped roughly 41,000 years ago. Now you can actually 'hear' this epic upheaval, thanks to a clever interpretation of information collected by the European Space ...

External sources, such as the early solar wind or Earth’s magnetic field, were too weak or faded too early. Internal sources like a magma ocean or mantle-core precession might have helped, but ...

Uranus's mysteriously asymmetrical and skewed magnetic field has long confounded astronomers—until now. When the Voyager 2 spacecraft zipped past Uranus in 1986, it noticed that the huge gas giant's ...

It's well established that the universe is expanding, but there's serious disagreement among scientists over how fast it's happening.