Our Solar System

Our solar system consists of eight planets which are Mercury,Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Up until 2006 Pluto was also considered a planet. All eight planets and Pluto orbit the Sun.

Why Do The Other Planets Orbit Their Parent Star?

The larger an obect is the more gravity it has,and because the Sun is so big,its powerful gravity pulls everything in the solar system towards it. While the Sun is pulling all the other objects in, at the same time these objects are rapidly trying to fly away. The result of this sends the objects trapped in the middle which causes them to orbit the star for eternity.The Sun contains around 98% of the material in our solar system.


Saturn is a lot bigger than Earth and because of this you would weigh a bit more on Saturn.Saturn is a lot like Jupiter because one its also a very big planet and two it also has rings. Saturn is the least dense planet in our solar system. It is made up of mostly hydrogen and helium.

Saturn is most well known for its rings. Saturn ids not the only planet that has rings however, Jupiter, Uranus and Neptune also have rings. There are seven altogether rings around Saturn made mostly of ice,rocks and dust.


Venus in some ways is like the Earth's sister planet. It is almost the same in size,chemistry, gravity and density as the Earth. Venus has rocks, sand, volcanoes and mountains just like the Earth. The only thing that VEnus does not have in common is the heat. On Venus its so hot you would be cooked in mere minutes if you had ever set foot on the planet. No living thing would be able to survive on Venus and therefor Venus is the hottest planet.


Unlike all the other planets Uranus spins on its side. It is believed that a long time ago a large object smashed into the planet sending it onto its side. Like Saturn, Uranus is made up of hydrogen and helium. Uranus is nicknamed "the ice giant" because the planet is made completely out of rock and ice. Scientist believe that there also might be a huge ocean, that is extremly hot , maybe even 5000 degrees fahrenhiet. This theory really excites scientists for the potential the planet holds.


Neptune is the smallest planet with rings and also contains hydrogen and helium. Not much was known about Neptune until it was visited by the spacecraft Voyager 2 on August 25, 1989. Voyager 2 took many pictures of the planet, and much of what we know today about Neptune came from this single visit.Neptune is a very windy place. No other planet in the Solar System has winds that are as strong as Neptune's. The winds near the Great Dark Spot were believed to have reached nearly 1,200 miles per hour (approx 1931 km per hour).


Mars is the nearest planet to the Earth. Evidence tells us that Mars once had rivers, streams, lakes, and even an ocean. As Mars' atmosphere slowly expended into outer space, the water began to evaporate permanently. Today the only water on Mars is either frozen or underground. You may sometimes hear Mars called the "Red Planet." This is because the surface of Mars is red. If you stood on the surface of Mars, you would see red dirt and rocks everywhere.On Mars if you weigheed 32 kg on Earth you would weigh only 12kg on Mars.

Mars is a Roman name .Mars was the Roman god of war and agriculture. It may not seem like these two things go together, but they do. Mars protected those who fought for their communities, and stayed home to raise crops for food. In Greek, Mars was known as Ares.


The planet Mercury is the closest of the planets to the Sun. Because this planet lies so close to the Sun, and as a result somewhat near to Earth, it is visible to observers on Earth in the late evening or early morning sky. Because of this, This planet is often called a morning star. This is because Mercury shines brightly in the early morning just before the sun rises. It has also been called an evening star for the same reason. Mercury is often visible for a brief period of time just after the Sun sets. Mercury has become a part of the mythology and legend of almost every culture throughout the history of the Earth.


Jupiter is by far the largest planet in our solar system. Jupiter is about 1000 times bigger than earth. Jupiter is a very stormy planet and some of these storms never seem to end. The result of all the clouds and storms causes the planet to also get quite colourful. One of Jupiters most stormy places is named "The Eye Of Jupiter" where a giant storm, bigger that the Earth has been raging on for at least 300 years. If you ever went to Jupiter and weighed 32kg on Earth you would then weigh 84kg on Jupiter.

Planet Moons Discovered
Mercury 0 ?
Venus 0 ?
Earth 1 Adam & Eve
Mars 2 1877
Jupiter 63 1610-2003
Saturn 62 1655-2006
Uranus 27 1787-2003
Neptune 13 1856-2003

I know it's not really related to the Solar System but click here for my page on Skiiing.