Proficiency 3
There are many things that made it possible for the solar system to be created throughout the billions of years. The things that I am going to be talking about and the research that I am going to be presenting in the essay will be telling you about how the solar system was formed, and the difference between the inner and outer planets.

The sun was formed billions of years ago and started out as a large collapsing cloud of gas inside of an ancient interstellar cloud. The cloud collapsed for millions of years until it formed a rotating disk with a large central bulge out of this disk would eventually form the planets, the center of this where the most mass wound up, would form the sun. The sun was still collapsing under the force of its own gravity and became millions of degrees Fahrenheit until the deuterium atoms began to fuse and give off thermonuclear energy. This slowed the collapse down a bit and eventually led to a second stage where hydrogen nuclei could fuse into helium, which then started the sun's current evolutionary phase

How was the solar system formed? This is an important question and one that scientists have worked extremely hard to find the answer to. There are many different theories that tell how our solar system was formed. The one fact that we know for sure is that the creation of the solar system happened billions of years ago. As like the sun scientists believe that the solar system formed much like the sun and started out as a huge ball of unstable gas collapsing under its own weight. After millions of years in this stage the matter inside of this huge cloud finally began moving in a humongous circle. In the middle of this huge cloud a star began to form getting bigger and bigger over extended lengths of time. further away from where the star was forming smaller clumps of gas began collapsing to make the planets and then started orbiting the sun which is how the milky way galaxy was formed.

There are many distinctive differences that set the inner and outer planets apart. The inner planets are made up of mainly rocks and metals which is why they have shorter orbit paths because they are slower. They are also smaller and none of the inner planets are bigger than 13000 kilometers. The outer planets are mainly made of gases and dust so they orbit much faster. Most people think of the gas giants as huge helium balloons floating through space. the inner planets and outer planets are also separated by the solar system.

The future of our sun and solar system is going to take a while to figure out, butt scientists already have thier theories on how it will end. As you probably know no solar system can exist without a source of heat or a star and when that star burns out the solar system will no longer exist. Our sun is a middle age star that is about 5 billion years old and has about 5 billion years left until it burns out. When it burns out our solar system will be dark and dim and there will be no life on any of the planets because there will be no heat if there is no sun.