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As a navigation tool, mainly.

2007-02-13 03:17:15 · 6 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

6 answers

The first civilization used the North Star were the Egyptians. The biggest pyramid that was built some 4000 years ago, had a certain design in its mysterious rooms inside the pyramid with a very small window facing the north polar star. If you are knowledgeable why when the earth rotates about its own axis once every 24 hours all stars move from the east towards the west. However, stars that are close to the North Pole revolve around the Polar star, but the polar star itself never moves and remains in its own position all night long and maintains that position also during the day although we can't see it. At the time when the pyramids were built, the polar star then was the star Theban, which is in the constellation of Draconis, the dragon. The Egyptian observed this star through this window and knew that the polar stars changes through the years. This was proven to be true only during the late 19th century when the wobbling of the Earth was understood resulting in changing the polar star according to the circle that is found in the revolving path of the Earth axis of rotation which is tilted 23.5 degrees. Astronomer have measured the movement of that tilted axis and found that it moves one degree every 70 years or makes a whole revolution once every approximately 25200 years. The star Vega will become the new polar star in 12000 years during which summer for the northern hemisphere will start around January 21, instead of June 21. The Polaris, which is our current polar star, will become the polar star again in approximately 25200 years.

2007-02-13 04:09:27 · answer #1 · answered by lonelyspirit 5 · 0 0

If you mean our current North Star Polaris, the answer is none.

Due to the precession of the equinoxes (the wobble of earth's axis relative to the stars) Polaris has only in the last few centuries moved close enough to the north celestial pole to be a useful navigation aid.

2007-02-13 22:30:25 · answer #2 · answered by Anonymous · 0 0

Just about all ancient peoples north of the equator

2007-02-13 11:22:19 · answer #3 · answered by Huey from Ohio 4 · 1 0

Navigators in the northern hemisphere

2007-02-13 11:45:45 · answer #4 · answered by rosie recipe 7 · 1 0

the sailors from france england. vikings. africans

2007-02-13 11:24:03 · answer #5 · answered by JAKE 3 · 0 0

sailors from Mesopotamia

2007-02-13 11:41:21 · answer #6 · answered by peyman_aa 2 · 0 0

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