Earth is surrounded by a magnetic field generated by electric currents from within the planet. Compasses take advantage of this field to identify north and serve as a navigational aid. But one social ...

On Earth, the magnetic field of our planet points a compass north, but in space, things are a bit more complicated. When you purchase through links on our site, we may earn an affiliate commission.

All celestial bodies—planets, suns, even entire galaxies—produce magnetic fields, affecting such cosmic processes as the ...