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Planets in our solar system By Patrick Forbes Solar system diagram The Sun is in the centre of our solar system. The order of the planets from the sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. The Sun is in the centre of our Solar System. The Sun is the largest object in the solar system. The layer of the Sun which can be seen is 6000oC. Mercury is the smallest planet and it looks like the moon. It has no moons. It is named after the Roman god of mischief. Venus is like Earth because it is almost the same size, has gravity and is made of similar materials. People think that Venus used to have oceans like Earth but it got warm and they all evaporated. It is named after the Roman goddess of love and beauty. The Earth is the fifth largest of the planets in the Solar System. It is the only planet in the Solar System that we know has life on. About 71% of the Earth’s surface is covered in salt water. The Earth rotates roughly 366.2 times as it orbits the Sun once. Mars is also called the red planet because it is red. It is red because its surface is iron oxide. People think it used to have water on it and some people think it still does. It is named after the Roman god of war. Jupiter is the largest planet in the Solar System. There is a big red spot on Jupiter which is a giant storm that is at least 300 years old. It is mainly made up of Hydrogen. It is named after the Roman god Jupiter which was the king of the gods and the god of sky and thunder. Saturn is the second largest planet in the Solar System. Saturn has a moon called Titan that is bigger than Mercury. It is named after the Roman god of farming. Uranus is the third largest planet. Uranus is the furthest away from the Sun and it is the coldest planet. It is named after the Greek god of the sky. Neptune is the fourth largest of the planets in the Solar System. It has the strongest winds in the Solar System that go up to 2100km/h. It is named after the Roman god of the sea. Pluto was classed as a planet from 1930 to 2006 but then people decided it should be a dwarf planet. It is the second largest dwarf planet and used to be the smallest planet.