Monday, May 26, 2014

 Solar system
In our solar system we have 8 planets that circle around the sun which is called a orbit. Mars is the only planet that orbits the sun in the other direction.years ago something hit Mars so that is why it orbits in another direction.  What is the solar system made of ?

Firstly, the inner solar system has Mercury, Venus, Earth and Mars. These are the planets closest to the sun. These are called the terrestrial planets because they have solid rocky surfaces.
The outer solar system has Jupiter, Saturn, Uranus and Neptune. These are sometimes called gas giants.

Secondly, our sun is a medium sized star and where very lucky to have a sun because without a sun there would be no life on Earth. One of the constellations in the sky is the southern cross. If you look up at the night sky you will see two bright stars that point towards the southern cross so its easy to find. There are other constellations as well as the southern cross.

Finally, our one and only moon was formed 4.6 billion years ago which was 30-50 million years before the solar system was formed. The moon is much smaller than Jupiter and Saturn's moons. Our moon is the 5th biggest moon is the solar system.

The solar system is made of planets, moons, stars and galaxies. The sun is a medium sized star and the moon was formed 4.6 billion years ago.

By Jacob Tollison  

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