how to track them through interplanetary space. Our records of the Earth's magnetic field go back as far as the mid-19th Century. They suggest an extreme space weather event is likely to occur ...

You can keep an eye on the Bz value on spaceweather.com or on other space weather-related sites. "The interplanetary magnetic ...

From the center of the solar system, rages a powerful wind. Sent by the Sun, this wind whips at speeds exceeding one million ...

A key ingredient of aurora activity is the Bz value of the Interplanetary Magnetic Field, which can be easily viewed on SpaceWeatherLive.com. You're ideally looking for a strong "south" Bz which means ...