The sun is at the center of the solar system and makes up approximately 99.9% of the total mass of the solar system.

This dominant force in the solar system is what makes life possible here on Earth and is the source of almost all of our energy. But the sun is also an active star. As our society relies more and more on technology, we must therefore keep a watchful eye on it. A powerful storm on the Sun can knock out our satellites and even power grids here on Earth.

We look back and talk about how the sun was formed, how it is now and how it will continue to evolve. One day, many billions of years from now, our sun will run out of energy, what will happen then?