Why is the north star the brightest star in night sky?

Answer 1

Because the Earth is rotating around its axis.

Answer 2

Well, they don't, really. It's an illusion born of the fact that the Earth rotates. The north end of the rotational axis points to a spot in space that happens to be reasonably close to the north star (Polaris). Thus, as the Earth turns, the apparent position of Polaris doesn't change very much, while stars further from the spot where the axis points trace apparent circles around that point. Polaris itself traces a very small circle, too.

It is interesting to note that the Earth's axis precesses, like a spinning gyroscope, with a period of about 26,000 years. So, thousands of years from now, Polaris will be far removed from the apparent point of the Earth's axis on the sky, and some other star will appear to be the "north star".

Answer 3

They don't. They move in eclipses with the gravitational source at one foci. And they move that way because gravitational attraction is an inverse square equation dependent on mass and radius.

F=GMm/R2

Answer 4

First of all, The stars don't surround the Earth, the stars surround the whole solar system. The reason why the stars surround the solar system is because our solar system is actually a galaxy and in the center of this galaxy is the sun which is actually a star so really we are just a part of the stars!!!

Answer 5

It is not. The brightest star in the night sky is Sirius. It appears so bright because it is a fairly bright star overall and is pretty close to us in terms of interstellar distance at a distance of 8.6 light years.

Answer 6

because they are not really a star shape that we think of, they are cirlces of burning gas so, they WOULD appear in circles because they really are circles.