and where they can attract or repel other magnets. Although we cannot see magnetic field lines, we can detect them using iron filings. The tiny pieces of iron line up in a magnetic field.

Scientists measured a chorus wave emerging from an unexpected place, and confirmed a key piece of a theory about how these ...

like the two ends of a bar magnet—that curves its magnetic field lines around a planet, such as Earth. This curved dipolar configuration allows for chorus waves to propagate from pole to pole, ...

For the first time astronomers have succeeded in observing the magnetic field around a young star where planets are thought ...

If these metals have not been turned into a permanent magnet they will still be attracted to a magnet if placed within a magnetic field ... Magnetic fields lines are invisible but they fill ...

but it's still close enough to the planet that the magnetic field is neat and orderly, more like a bar magnet. Farther out in the tail, the lines of Earth's magnetic field have been stretched and ...