Out in Space

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by crago1990
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Out in Space

Planets of the Solar System

The distance of each planet from the Sun

The PlanetsThe solar system is made up of two parts which are separated by the asteroid belt. The Inner Solar System is made up of Mercury, Venus, Earth and Mars. These are closest to the Sun and are called terrestrial planets because they have very solid rocky surfaces. The Outer Solar System has Jupiter, Saturn, Uranus and Neptune. These are sometimes called the gas giants. Out past Neptune is the planet of Pluto which has a solid, icy surface.

Out in Space

Pluto, the "dwarf planet"

Welcome to your Out in Space page 5C! Here you will find lots of information on our topic for this term!

What is the solar system?The solar system is made up of nine planets that orbit the Sun. In addition to planets, the Solar System also consists of moons, comets, asteroids, minor planets, dust and gas.

How the Planets OrbitEverything in the Solar System orbits or revolves around the Sun. The Sun contains around 98% of all material in the Solar System. The larger an object is, the more gravity it has. Because the Sun is so large, it's powerful gravity attracts all the other objects towards it. At the same time, these objects, which are moving very rapidly, try to fly away from the Sun, outward into the emptiness of outer space. The result of the planets trying to fly away, at the same time that the Sun is trying to pull them inward is that they become trapped half-way in between. Balanced between flying towards the Sun, and escaping into space, they spend eternity orbiting around their parent star.

The Sun

Yikes! Astronomers have demoted Pluto so there are now only 8 planets; Pluto is officially no longer a planet. Now they're calling it a "dwarf planet"!


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