There are so many stars ... wherever the north end of the earth's axis happened
to point during our Century, there's a good chance there would be a star near that
point in the sky.
But it's not a sure thing. In the Southern Hemisphere, there's no bright star near the
South Celestial Pole ... nothing like a "South Star" to correspond to our "North Star.
It does, but over millions of years, the earth tilts a little and there is a new north star.
The North Star sits at a point in the sky near where the northern axis of the earth sits. This means that the North star's relative position in the sky does not change. In fact, in a 24 hour Earth cycle, the north star only moves in a small circle.
Because the earth's north pole happens to point [very close] to Polaris.
The Earth's North Pole points towards the star Polaris, also known as the North Star. It is located very close to the Earth's rotational axis, making it a useful reference point for navigation and identifying direction in the northern hemisphere.
Currently, the north end of the Earth's rotation axis points toward a point in the skythat happens to be only about 1/3 of a degree from a relatively bright star. The resultis that the star seems to never move, and is called "The North Star".
The North Pole points toward the North Star, also known as Polaris. This star sits almost directly above the Earth's true North Pole, making it a useful navigational tool for determining direction.
The altitude of the North Star will not change from any point on Earth. However, the declination changes depending upon where you are and when - It is less than 90 degrees.
To find the North Star using a compass, first locate the North direction on the compass. Then, hold the compass level and point the direction of the North arrow towards the North Star. The North Star is located directly in line with the Earth's axis, so following the compass's North direction should lead you to it.
the axis is a imaginary line that cuts trough the earth it points southwest and northeast
The northernmot point on the earth is the North Pole. It may not be on land, but it is "on the earth."
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True north runs from any point on the Earth's surface to the North Pole.