Nautical Astronomy

Nautical astronomy is a branch of astronomy focused on navigation and sea travel. It involves using celestial bodies—like the sun, moon, stars, and planets—to determine a ship's position at sea. Mariners measure angles between these objects and the horizon using sextants or similar instruments. By calculating these angles along with precise timekeeping, sailors can find their latitude and longitude, helping them navigate safely across vast oceans. This practice has been essential for maritime exploration and trade, especially before modern navigation technologies became widespread.