What is the Solar System

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What is the Solar System? : 


What is the Solar System and how did it begin? : 

What is the Solar System and how did it begin? The Solar System is made up of the sun. Another word for Solar is’’ of the sun’’. In the Solar System there a nine planets. There are also more than 60 moons. Scientists believe that the Solar System was shaped by an enormous swirling cloud of gas and dust particles. Many other particles began to flow like a whirlpool around the Sun. About 4.5 billion years ago, the cloud separated into many small lumps. They became the planets, moons, asteroids and comets of the Solar System.

How big is the Solar System and how old is it? : 

How big is the Solar System and how old is it? The Solar System is gigantic. It is so huge that when you fly a jet plane from the Sun to Earth it would take you over 18 years to get to Earth. They say that the Solar System is 4.6 billion years old. It is nearly 10 billion years after the Universe began. New stars and Solar Systems are still being formed.

What are planets and how do they move? : 

What are planets and how do they move? A planet is a big object full of rock or gas that revolves around, or orbits, a star. Earth is a planet and it travels around the star that we call the Sun. Each planet rotates around an imaginary axis. Most of the planets spin with their axes pointing nearly up and down. Uranus however spins on it’s side. Also planets look like they are a circle but they are actually shaped like a spheriod that means that they are shaped like a squashed ball.

Earth : 

Earth Earth is the third planet from the Sun. Earth is the only planet in the Solar System where we know life exists. Earth has fantastic conditions for life. Earth also has air and water on it. If these were missing, life could never exist here. Earth’s atmosphere has a shield around the planet so the rays of the Sun don’t harm us.

Mars : 

Mars Mars is the fourth planet from the Sun. Scientists think that there may have been life there. They are researching this theory. Mars is cold and dusty. It’s soil contains lots of iron, which makes the planet rusty red. The climate on Mars is cold and harsh. Temperatures can Drop to -123oC. In 1996, scientists analysed a meteorite that had come from Mars.

Jupiter : 

Jupiter Jupiter is the largest planet in our solar System. It is so huge that if it was hollow all the other planets would fit inside it. Jupiter has about 29 moons that we know of and some are still being found. They are called Galilean moons. At the surface of Jupiter, the gas is about the same thickness as the gas in Earth’s atmosphere.

Saturn : 

Saturn Saturn is the second largest Planet. It is famous for the enormous rings it has round it. Saturn’s rings are actually icy boulders and rocks orbiting the Planet. Saturn’s rings can actually be seen from Earth Using a telescope. Titan is one of Saturn’s moons. Scientists think that there may have been life there.

Mercury : 

Mercury Mercury is the closest planet to the Sun. It is a empty, rocky planet that looks a lot like Earth’s moon. The surface of Mercury is covered with huge holes called craters where rocks called meteorites have crashed into. The largest crater on Mercury is the Caloris Basin.

Neptune : 

Neptune Neptune is the eighth planet from the Sun. Neptune also has a violent atmosphere and the fastest winds in the Solar System. The winds travel at 2,000kph. Uranus and Neptune both have a gas called methane in their atmospheres. Methane absorbs red light and reflects blue light, therefore these planets look blue and green.

Venus : 

Venus Venus is nearly the same size as Earth and is the closest planet to it. Venus’s rain could dissolve a human being. The clouds it comes from a strong acid. This acid is called sulphuric acid. Venus has lots of volcanoes. In the past they have erupted leaving extremely hot melted rocks called lava.

Pluto : 

Pluto Pluto was a tiny planet made from rock and ice. Because it was too tiny the astronomers are arguing about whether or not it is a planet so far they say that it is not a planet. It was usually the farthest from the Sun but it is closer to the Sun than Neptune.

Uranus : 

Uranus Uranus is the seventh planet from the Sun. It is over 19 times farther from the Sun than Earth is. Uranus has 21 moons that the scientists know of including 1 that hasn’t been named yet. Uranus spins at a different angle from all the other planets. You can clearly see Uranus’s dust rings in the picture.

Why I chose this Inquiry? : 

Why I chose this Inquiry? I chose this inquiry because I wanted to learn more about the Solar System and the planet we live on. From doing this I have learnt a lot about space.

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