What Type of Star Is the Sun?

The sun is a yellow dwarf.
••• Comstock/Comstock/Getty Images

The sun is a yellow dwarf star which is very massive, hot and ancient. It is an area of great nuclear activity and it produces multiple types of radiation. By learning about different aspects of the Earth's primary source of both light and heat, we can get a better idea of what type of star the sun is within our solar system.

Yellow Dwarf

The sun is characterized as a yellow dwarf star and is medium in size compared to other stars. It is one of many stars which shine throughout the galaxy known as the Milky Way. The dwarf sun burns very hot and its central temperature has been estimated to be more than fifteen million degrees Celsius.

Nuclear Power

Nuclear activity takes place within the sun. At its core, nuclear fusion transforms hyrdrogen. The result is helium. This nuclear activity sends its radiation all the way to the surface of the sun and then travels further into space. The radiations produced are both light and heat.

Radiation

Light and heat are well-known forms of solar radiation on which we depend on the planet Earth but they are not the only forms of radiation which emanate from the sun. There are quite a few others including radio waves, X-rays and ultra-violet rays. The atmosphere of the planet shields life on Earth from any damaging effects which might otherwise be caused by these forms of radiation.

Size

The sun is a massive star. It measures 1,392,000 kilometers in diameter. It is estimated to be more than four and a half billion years old and is the closest star to us. Its great mass gives it gravitational power on all the planets in the solar system and this is the reason Earth stays in orbit around the sun.

Related Articles

How Is Heat Transferred From the Sun to the Earth?
Unique Facts About the Sun
Why Is the Sun So Bright?
How Does the Sun Release Energy?
Parts of a Star
Life Cycle of a Medium-Sized Star
Example of a White Dwarf Star
Facts About the Sun's Energy
What Is the Chemical Composition of Most Stars?
How Can a Nebula Eventually Become a Black Hole?
How Does the Sun Affect an Ecosystem?
What Gases Make Up the Sun?
What is Earth's Position in the Solar System?
Characteristics of a Star
Geology Facts on Neptune
Where Does Nearly All of the Earth's Energy in the...
What Kind of Stars Live the Longest?
Stages in the Life Cycle of a Star
Fun Facts of the Sun, Moon & Stars
The Outer & Inner Parts of the Sun

Dont Go!

We Have More Great Sciencing Articles!