Relative to which frame of reference does a free-spinning gyroscope maintain its orientation?

Answer

Inertial space

The spin axis of a free gyroscope remains fixed relative to inertial space, often described as the fixed stars, rather than rotating with the local Earth frame underneath it.

Relative to which frame of reference does a free-spinning gyroscope maintain its orientation?

#Videos

How Gyroscopes Balance and Keep Our World Oriented - YouTube

rotationMomentumgyroscopeorientation