This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...

In fact, the discovery actually supports a key part of the theory about how chorus waves work. Using data from the ...

They are usually detected in areas of space where Earth’s magnetic field resembles that of a giant bar magnet (a dipole), out to around 51,000 km above Earth’s surface, beyond geostationary ...