Mystery and Facts of Pole Star
There are lakhs of stars in the sky, or there may be more than this, but whenever it comes to stars, the mention of the Pole Star comes up.
Everyone’s well-known Dhruv Tara is different from many twinkling stars in many ways. It has three major features, due to which it has its own identity.
Firstly, it is always visible in the north direction. For this reason, it is also called the North Star. Some of its other English names are Polestar, Polaris, and Lodestar; it is called Najum al-Shumal, i.e., Star of the North, in Arabic, and Kutbi Star in Farsi.
Its second feature is that it is more shiny. A pole star can be easily identified at night because it shines more than other stars. According to the information received in astronomy, the 48th brightest star among the known stars is Dhruv Tara.
Because of its identity, in ancient times, when there were no means to know the direction, the pole star was considered the symbol of the northern direction and used to know the direction.
Especially for the commercial caravan passing through the remote deserted deserts and mountains, it worked like a direction indicator.
The third feature of a pole star is its stability, other stars keep changing their position after a short period. But the pole star can be seen at any time of the night at the same place. Because it is also called Atal Tara. In India, the story of King Dhruv is told by connecting it.
Such stories about this star are prevalent in the culture of Chinese, Arabic, Egyptian, Greek, and North Polar countries, which cannot be said how true or false they are.
The reason for the pole star always appearing in the northern direction is due to its position being almost in a straight line with the earth’s north pole, when our earth rotates on its axis from west to east, the stars in the sky show the opposite direction of the earth’s rotation. (East to West) are seen circling.
But the pole star appears to be located in the northern direction in line with the earth’s axis. According to the astronomical discoveries known so far, it is 0.7 degrees away from the location of the earth and not in the stress line. If this star is observed deeply, it does not remain stable but revolves around the Earth.
We can estimate the vastness of the Dhruva Star from this fact, it is five times bigger than the Sun. For this reason, it is also called Mahadanav Tara.
Its diameter is 30 times that of the Sun, about eight times its weight, and its brightness is 22 times that of the Sun. Its distance from Earth is about 390 light years.
The Pole star is located in the constellation called Ursa Minor, its scientific name is Alpha Ursa Minoris. The light of this star, which appears to be of dim brightness, keeps on increasing and decreasing. Based on its distance from the Earth, it can be said that the pole star we are seeing today is the form of the sixteenth century.
Scientists believe that the pole star changes after 26 thousand years. Even though it may sound strange to hear this, many researchers confirm it.
Three thousand years ago, the constellation named Thuban was in the position of a pole star for us earthlings. Similarly, after five thousand years, Deramin Nakshatra will become Polestar for the Earth.
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