The obvious displacement of celestial objects has been a topic of commentary and inquiry since antiquity. Whereas stars seem mounted relative to at least one one other inside constellations over human timescales, this notion isn’t solely correct. Their positions are, in truth, topic to alter.
Understanding stellar motion is key to fields resembling astrophysics and cosmology. Correct measurement of those shifts aids in figuring out stellar distances, velocities, and the general construction of the Milky Means galaxy. Traditionally, this data has been important for navigation and timekeeping.