This persnickety number determines the strength of magnetic fields. It figures in everything from motors and generators to audio speakers. Oh, and without it we’d live in eternal darkness.

Since the Big Bang, magnetic forces have existed as a natural force with the movement of charged particles. For a long time, scientists believed that these primordial magnetic fields (also known as ...

The universe is soaked in weak-but-persistent magnetic fields. Despite decades of research, astronomers still aren't exactly sure where these magnetic fields came from. But new research suggests they ...

A recent study published inScience Advances reveals that a temporary collapse of Earth’s magnetic field, known as the ...

An unusual reduction in the strength of Earth's magnetic field between 591 and 565 million years ago coincided with a significant increase in the oxygen levels in the atmosphere and oceans, according ...

New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — ...

The early Universe hosted ultra-weak magnetic fields that still shaped cosmic structures. New simulations establish stricter limits on their strength. Magnetic fields that originated during the earlie ...