The Sun

By: Chloe Boul

The Sun

The sun is what we call the giant star at the center of the Milky Way Galaxy. About 1 billion Earths could fit in the Sun. It's circumference is about 2,713,406 miles. But it's actually considered a medium-sized star. Compared to Betelgeuse, a red giant, it's tiny. Betelgeuse is about 700 times bigger and 14,000 times brighter. The sun gives energy through nuclear fusion, which uses molecules of hydrogen and helium. Hydrogen and helium are the two gases that make up the Sun (and also the first two elements on the periodic table). The Sun also has 6 distinct layers...

The Layers

The Sun has 6 distinct layers. They are (from inside out) the core, radiative zone, convective zone, photosphere, chromosphere, and corona.

Auroras

An aurora is a natural light display in the sky. It occurs when solar storms disturb the Earth's magnetic field, which causes it to rearrange itself and convert some stored energy into kinetic energy particles. These particles flow inward towards the Earth along the polar magnetic field lines. When they enter the ionosphere they collide with oxygen and nitrogen atoms to produce an aurora. This is more commonly known as the Northern Lights or the Aurora Borealis.