A spinning gyroscope doesn't lock onto the Earth, it locks onto the universe, so how do ships coax it into pointing north?

The 1967 Gyro-X is a one-of-a-kind self-stabilizing two-wheeled wonder of the automotive world. Developed by aerospace engineer Tom Summers and designer Alex Tremulis, it was a fanciful approach to ...

The wobble of Earth’s axis is called precession. While most of us are familiar with our planet’s primary motions — rotation and revolution — few are aware of precession. This characteristic is vividly ...