The Hubble Space Telescope (HST) re-orients itself using tiny sensor gyroscopes that maintain a consistent orientation, helping it determine its position in space. For enhanced pointing accuracy, HST is equipped with star trackers integrated into its instruments. Additionally, the telescope utilizes reaction wheels, which are heavy spinning wheels that facilitate movement by conserving angular momentum. When these wheels are spun, they create a reaction that allows the telescope to adjust its orientation. This combination of gyroscopes and reaction wheels enables precise control over HST's positioning in orbit.
