- published: 02 Feb 2016
- views: 544723
A pole star is a visible star, an especially prominent one, that is approximately aligned with the Earth's axis of rotation; that is, a star whose apparent position is close to one of the celestial poles, and which lies approximately directly overhead when viewed from the Earth's North Pole or South Pole. A similar concept also applies to other planets. In practice, the term Pole Star usually refers to Polaris, which is the current northern pole star, also known as the North Star.
The south celestial pole currently lacks a bright star like Polaris to mark its position. At present, the naked-eye star nearest to this imaginary point is the faint Sigma Octantis, which is sometimes known as the South Star.
While other stars' apparent positions in the sky change throughout the night, as they appear to rotate around the celestial poles, pole stars' apparent positions remain virtually fixed. This makes them especially useful in celestial navigation: they are a dependable indicator of the direction toward the respective geographic pole although not exact; they are virtully fixed, and their angle of elevation can also be used to determine latitude.
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You and I
Northern lights
You were wrong
I saw the polestar
And knew that
England
I thought you were right
Walking me home in that icy cold night
You and I
Northern lights
You were wrong
I saw the polestar
And knew that
England
I thought you were right
Walking me home in that icy cold night
England
I thought you were right
Hiding from smog in the Newcastle light
I was wrong