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ROBERT E DUNN

polestar

4/1/2022

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Picture
The polestar, also spelled pole star, is the North Star in the Northern Hemisphere.

According to Britannica.com, “[It] is the brightest star that appears nearest to either celestial pole at any particular time. Owing to the precession of the equinoxes, the position of each pole describes a small circle in the sky over a period of 25,772 years. Each of a succession of stars has thus passed near enough to the north celestial pole to serve as the polestar. At present the polestar is Polaris (α Ursae Minoris); Thuban (α Draconis) was closest to the North Pole about 2700 BC; the bright star Vega (α Lyrae) will be the star closest to the pole in AD 14,000.


“The location of the northern polestar has made it a convenient object for navigators to use in determining latitude and north-south direction in the Northern Hemisphere.

“There is no bright star near the south celestial pole; the present southern polestar, Polaris Australis (also called σ Octantis), is only of the 5th magnitude and is thus barely visible to the naked eye.”

Think of the Earth as rotating on an imaginary line that is tilted, not vertical.

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  • CRIME BLOG
  • Blog
  • Author
  • Pretty City Murder
  • Chapter 1
  • Contact
  • Short Stories
    • Deaf
    • Anonymous
    • Isolated
    • Apartment 19
    • Letters
    • Phantasmal
  • True Stories
    • Talk
    • Heel
    • Priest
    • Best
    • Sweet
    • Father
  • Blog & Crime Blog
  • Piano
  • Servile Obedience
  • Men and Women
  • How It Happened
  • Website Stats
  • Latin Mass in History
  • Catholicism in Spain
  • Reading List
  • Mass of the Ages