Birth and Death of a star

Stars are born from dense clouds of gasses. Usually in the arm of a spiral galaxy. Hydrogen atoms fall, increasing their speed and energy, toward the center of the cloud. This is happens due to the star's gravity. When the hydrogen energy increases it produces heat. After this process goes on for millions of years the temprature reaches about 20 million degrees fahrenheit.

Once at this extreme temprature there are a series of nuclear reactions. These reactions mark the birth of a star. Just like how the hydrogen brought life to a star its depletion will cause it's death. The first sign of a stars death is the swelling and reddening of its outer edges. When it is at this stage it is called a Red Giant. A white dwarf is what stars, like our sun, become after they have used up all their nuclear fuel.

As you can see our sun will become a whit dwarf when the end comes. Red Giants are bigger stars when their nuclear energy is comming to an end. Now black holes are remnant of a massive star that has used it's nuclear fuel and has collapsed into a zero volume under tremendous gravity. It is at the point of "singularity." This is where the pressure and density are infinite. Scientists believe that black holes make up 90% of the universe.

I enjoy the topics about space, stars, and our universe. I think that stars are very interesting. Yet I don't think we know as much about them are we think. Also the topic of black holes really intreges me. We need to know more about our sun because it's a big part of our life. If it isn't there neither are we.