We just learned about the Gyroscope.
Another tool used for navigation and guidance is a Spacecraft Magnetometer.
This uses a magnet that is wrapped in metal coils, with electricity running through the metal coils.
If there are other magnetic forces around, these electric coils will give off fields that can tell the rocket which way to go.
(from: wikipedia - spacecraft magnetometer)
Kid Facts - Blast from the past: Cross Peen Hammer
