Life+cycle+of+a+star

media type="custom" key="4534316"

Stars are formed over billions of years. Cloud of dust and gas called "**Nebula**" form together through gravity. Once the nebula clumps it eventually forms a "**Protostar**". Once the protostars centre gets hot enough it starts to create nuclear reations. The star then lives like our sun for billions of years. Stars that are similar to the size of our sun live for about 10 billion years. Our sun has been living for about 5 billion years and is around half way through its life. Stars that are a lot bigger then our sun live for only 3-4 billion years. After a few billion years the star stars to die. When the star is near the end of its life it turns a red colour. We called these stars "** Red Giant Stars **". Stars the size of our sun don't really do much when they die. When giant stars reach the end of their life they turn red aswell, we call these ones "** Red Super-Giant Stars **". When they die they blow up, causing a "**Supernova**" which sends a big load of dust and gas into the atmosphere. This can form another star from these pieces. Also sometimes when the giant stars blow up they can form a "**Black Hole**". Black holes suck up everything around it, including light.


 * This is a black hole. fggfdgfgfgdjksg This is a Supernova.**