The apparent displacement of celestial objects has been a subject of observation and inquiry since antiquity. While stars appear fixed relative to one another within constellations over human timescales, this perception is not entirely accurate. Their positions are, in fact, subject to change.
Understanding stellar movement is fundamental to fields such as astrophysics and cosmology. Accurate measurement of these shifts aids in determining stellar distances, velocities, and the overall structure of the Milky Way galaxy. Historically, this knowledge has been vital for navigation and timekeeping.
