Sun

The Sun is the closest star to us in space and the only star that gives light to us in less than 10 minutes. The star's diameter is 861,000 miles (1,400,000 km) which makes it a truly giant star.

Structure

 * 1. Core - The core is the center of the Sun which gives out light made of hydrogen gas. When the hydrogen explodes inside our star, it gives out light and makes the Sun shine. The temperature here rises to a fiery 15,000,000 C.
 * 2. Radiative Zone - the light passes through this layer on its way to the top. Temperatures rise here to 10 million Celcius.
 * 3. Convective Zone - Light here is moved up by convection cells and transported to the next layer. It can take up to a million years for energy to travel through here due to a high amount of hydrogen and helium.
 * 4. Photosphere - It is the surface.

Life
The Sun formed 4.99 billion years ago and is approximately halfway through its life. In a billion years, the Sun will start to warm up, due to it starting to lose hydrogen inside the core. In 5 billion years, the sun will grow into a red giant star and melt Earth. Much later, it will pass through its red giant stage and explode in a planetary nebula, burning any remaining planets. The white dwarf core will remain and will slowly cool to create a hypothetical black dwarf. As the current age of the Universe is quite low, no black dwarfs exist in the Universe.