Polestar: meaning, definitions and examples

Etymology

• The word 'polestar' comes from 'pole', which refers to the North Pole, and 'star', indicating its bright position in the sky.
• In Old English, 'pol' meant 'axis' or 'pivot', symbolizing how this star has long been a point of navigation.

Astronomy

• Polaris, the current polestar, is located about 430 light-years from Earth and is part of the Little Dipper constellation.
• It is not a single star but a triple star system, consisting of two main stars and a smaller one, creating a unique celestial dynamic.

Cultural Significance

• Many ancient cultures, including the Vikings and Polynesians, relied on the polestar for navigation across oceans.
• In literature, the polestar often symbolizes guidance, purpose, and unwavering direction during challenging times.

Navigation

• Before modern technology, sailors and travelers used the polestar to orient themselves in the dark, ensuring safe passage.
• It is at the end of the handle of the Little Dipper, making it easily identifiable in the night sky.

Science

• Even though the Earth wobbles on its axis over time, Polaris remains close to the North Celestial Pole, making it a consistent reference point.
• Its brightness can vary slightly over time, making it an interesting subject of study for astronomers examining stellar phenomena.