A Guide to Things Orbiting Our Sun

I found article titled, “Solar System facts: A Guide To Things Orbiting Our sun”. The solar system is made up of the sun and everything that orbits around it, including planets, moons, asteroids, comets, and meteoroids. Many scientists think our solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula. As the nebula collapsed because of its gravity, it spun faster and flattened into a disk. Most of the material was pulled toward the center to form the sun. Other particles within the disk collided and stuck together to form asteroid-sized object named as planetesimals, some of which combined to become the asteroids, comets, moons, and planets. And the solar wind from the sun was so powerful that it swept away most of the lighter elements, such as hydrogen and helium, from the innermost planets, leaving behind mostly small, rocky worlds. The solar winds was much weaker in the outer regions, however, resulting in gas giants made up mostly of hydrogen and helium. The four inner most planets(Mercury, Venus, Earth, and Mars) are made up mostly of iron and rock. They are known as terrestrial or earth like planets because of their similar size and composition. The outer most planets(Jupiter, Saturn, Uranus, and Neptune) are giant worlds with thick layers of gas. Nearly all their mass is made up of Hydrogen and Helium, giving them a composition like that of the sun. Also beneath this planet there layers they have no solid surface.

The tenth conceptual objective, is I can describe the nature of our solar system and how it was formed. We lectured about how we have facts from scientist how we know are solar system was made. We have evidence to support this and that we observed of motion to our solar system, and a flat plain of rotation which are all going the same rotation. As stated I this article planets are formed from dust which is compressed and grows as time goes, this can take up millions of years to create. We talked about the different of planets in out lecture tutorial book. The first four planets called the terrestrial planets which are a solid planets, and are the closet to the sun. The next four planets are called the Jovian planets and they are the farthest from the sun, and are not actually a solid planet until you get to the core of the planet. Also in our lecture tutorial book we talked about the motion of extrasolar planets. In this tutorial we learned how the planets are on a plate plane and they are all moving in the same direction which is counter-clockwise.

This article correlates to what we learned in class. It explains how the solar system was created and how we have evidence to prove it. And to what we learned in class in our tutorial books it all made sense. Now I can explain how the solar system was formed, and how the planets are different from each other.


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