Polaris; the North Star; Alpha Ursae Minoris
Astronomical name for the star Polaris, commonly called the North Star. Used in both scientific and everyday contexts.
See also: ポラリス
北極星はほとんど動かないので、昔から航海の目印にされてきた。
Because Polaris barely moves, it has been used as a navigational marker since ancient times.