Stars are balls of hydrogen at huge temperatures and pressures, and there is a nuclear reaction going on inside that converts the hydrogen to helium.
Polaris is a system of five stars and is about 400 times brighter than the Sun although of course it is a lot further away from us.
It just happens to be overhead at the North Pole but that does not have any effect on its temperature as it is about 350 light years away.
He didn't. The fact that Polaris is the "north star" is entirely coincidental; 5,000 years ago, Polaris wasn't above the north pole, and 5,000 years from NOW, it won't be either.
The name of the north star is Polaris. As the brightest star in the constellation of Ursa Minor it is also called alpha Ursae Minoris. It is actually a multiple star comprised of Polaris Aa, Polaris Ab and Polaris B.
The common name for Polaris, the North Star, is simply "Polaris."
The star "Polaris" is the North Star.
North star, or Polaris, is the name of a bright star that is CURRENTLY near the celestial north pole. Since the position of the north pole will change in the future, Polaris will still be called Polaris, but it will no longer be the north star.
The north star is polaris's other name.
Polaris and the North Star are the only two names I know.
The North Star is Polaris.
north star+
No, Rigel is not the closest star to Polaris (the North Star). Rigel is a bright star in the constellation Orion, while Polaris is located in the constellation Ursa Minor. The closest star to Polaris is Urodelus, also known as "Polaris Australis."
The North Star The Pole Star Polaris
another name for the north star is polaris