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Our Solar System Our solar neighborhood is an exciting place. The Solar System is full of planets, moons, asteroids, comets, minor planets, and many other exciting objects. Learn about Io, the explosive moon that orbits the planet Jupiter, or explore the gigantic canyons and deserts on Mars. In our solar system, nine planets circle around our Sun. The Sun sits in themiddle while the planets travel in circular paths (called orbits) around it. These nine planets travel in the same direction (counter- clockwise looking down from the Sun's north pole). The picture on the right shows the different paths and positions of each planet (not to scale). The solar system is made up of two parts: The inner solar system contains Mercury, Venus, Earth and Mars. These four planets are closest to the Sun. These are also known as teh rocky planets. The outer solar system contains Jupiter, Saturn, Uranus, Neptune and Pluto. The inner plaets are seperated from the outer planets by an Asteroid belt. The Solar System is made up of all the planets that orbit our Sun. In addition to planets, the Solar System also consists of moons, comets, asteroids, minor planets, and dust and gas. Everything in the Solar System orbits or revolves around the Sun. The Sun contains around 98% of all the material in the Solar System. The larger an object is, the more gravity it has. Because the Sun is so large, its powerful gravity attracts all the other objects in the Solar System 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. 1 Our Solar System by Ahmad Patel


The Sun Our sun is a star. It is made out of two gases, which are called helium and hydrogen. The sun is always burning and extremely hot. The outside of the sun is 11,000 degrees farehnheit. A really hot day on Earth is approzimately 100 degrees fahrenheit. The sun surface is 100 times as the hottest day on Earth. The sun is so big that you could fit the Earth inside it more than a million times, compared to some other stars, though, the sun is tiny.

Like all stars, the sun is a massive ball of exploding gases. It gives off huge amounts of heat and light. This is sunshine, without it, life could not exist on Earth.

cross section of the sun

Warning! Never look directly at the sun. Its rays will hurt your eyes. They may even blind you. It is dangerous to look straight at the

2 Our Solar System by Ahmad Patel


Mercury Mercury means: In astronomy, Mercury was the Roman version of the Greek god Hermes. He was the messenger for the other gods, and for this reason Mercury is often depicted in pictures with winged sandals. In addition to delivering messages, he was also the protector of travelers and merchants. Mercury is the closest planet to the sun. During the day it gets four times hotter than boiling water. Mercury is a small planet that orbits very close to the sun. The suns light make s Mercury’s days incredibly hot, but nights on on Mercury are bitterly cold – much colder than any freezer. This is because there is no air to stop the heat from escaping.

Mercury is a small, rocky planet - much like our Moon. It is covered with craters and has changed very little from when it was first formed.

Look for Mercury! You can see Mercury with a pair of binoculars or even the naked eye. Because it is always very near the Sun, Mercury may be hard to see in early evening skies

3 Our Solar System by Ahmad Patel


4 Our Solar System by Ahmad Patel


Venus

Venus is the closet planet to Earth.On venus,the sky is yelllow and cloudy.The clouds trap the suns heat,which makes venus a very,very hot planet. There are massive volcanoeson venus.Some are much higher than any mountains on Earth.venus most famous volcono is called Moat Mons. It is over 9kms high. Sometimes on venus, all the volcanoes eruot together, coverng the whole planet in lava. The air on Venus is full of deadly acid and lightning flickers in the sky. Many spaceships have visited Venus but they have been destroyed by the heat and acid in the air. Venus is the closet planet to Earth.On venus,the sky is yelllow and cloudy.The clouds trap the suns heat,wich makes venus a very,very hot planet. There are massive volcanoeson venus.Some are much higher than any mountains on Earth.venus most famous volcono is called Moat Mons. It is over 9kms high. Sometimes on venus, all the volcanoes erupt together, covering the whole planet in lava. The air on Venus is full of deadly acid and lightning flickers in the sky. Many spaceships have visited but they have been destroyed by the heat and acid in the air.

The surface of Planet Venus

5 Our Solar System by Ahmad Patel


6 Our Solar System by Ahmad Patel


My planet Earth. Earth is the planet that i live on. Most of its surface is covered with water, so from space, the Earth looks blue. Together, the water, air and warmth of teh Sun make life on Earth possible.

Life on Earth. There are over 30 million differen types of plants and animals on earth. They live everywhere, from the deepest ocean to teh top of teh highest mountain. Restless planet. Compared to teh other planets in teh solar system, earth has many volcanoes and earthquakes. Deep underground, the Earth is so hot that the rock is molten. When a volcano erupts, the molten rock escapes onto the planet surface.

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Earth

Earth is the third planet from the sun. It is the largest of the four inner planets. These planets are Mercury, Venus, Earth and Mars. The inner planets are also called the rocky planets, because they are made of rocks Earth is often called the "Water Planet" because it is the only planet in our solar system which has liquid water on its surface. About 70% of the surface of Earth is covered by water! The other part of Earth is made up of continents and islands which have different landforms on them. Examples of landforms are mountains, and plains. Because Earth has so much water, plants and animals can live on Earth. Earth spins very quickly compared to other planets. It only takes Earth 24 hours to spin around its axis one time. One Earth day is 24 hours long!!! Earth orbits the sun in 365 days! This makes one Earth year 365 days long!!!

8 Our Solar System by Ahmad Patel


9 Our Solar System by Ahmad Patel


Earths moon The moon is our closest neighbour in space. Just as the Earth orbits the sun, the moon goes around planet Earth. There is no life or weather on the moon – no clouds, wind, rain or snow. The moon takes a month to go around the Earth. It also takes a month to spin around . because of this, we only ever see one side of the moon from earth. However, spaceships ahve travelled around the moon, so we know what the far sid e looks like. As the moon moves, different parts of it are lit by the sun. This makes it look as if the moon as if the moon is changing shape. The different shapes are called phases. The different phases are illustrated below.

Most of the moons craters were made millions of years ago, when huge chunks of rock crashed into it.

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Moon visit

11 Our Solar System by Ahmad Patel

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