The Earth is protected by a cocoon of magnetic fields Image #1 Image #2 Image #3. Conversely, they contain energetic charged particles, and thus passing through them poses problems for satellites and astronauts.

The Earth's North Magnetic Pole is moving at over 50 km/year. The Earth's magnetic field points obliquely *into* the ground in Laramie.

Is a force a field, a power, an energy, ... ? Obi Wan needs to retake PHYS 1220.

The The Cornell Electron Storage Ring