In my project I have tried to explain the typical lifecycle of a star. I have included text and pictures in my pages to give you a clear understanding of the lifecycles. There are many different ways they can change and I have tried to include as many of them as possible. All stars go through a cycle but, as I've shown, there are many different steps they can go through. The first two steps of every star are: they all start out as a nebula, then turn into protostars as the matter gets denser and they start to heat up. The sun in our solar system is a typical sun and is in the middle of its life cycle. It has a medium temperature, life span and colour.
A stars colour depends on both its temperature and make-up. The colours range from red to violet. The temperatures can be as cold as 3,000 Celsius and as hot as 40,000 Celsius. They can be made up of different things. All stars are made up of either terrestrial oxygen, solar hydrogen, solar sodium, solar iron, solar iron and calcium or solar calcium.
One of the most interesting things that are formed by stars are black holes. They form from the biggest kind of star which is called the supergiant. Black holes also have the densest matter that is known. They attract matter from other stars getting bigger and bigger, but since no light can escape they can't be seen.