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https://www.youtube.com/watch?v=libKVRa01L8

https://www.youtube.com/watch?v=F2prtmPEjOc

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This is an image of a comet.

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Comets are small balls of ice and rock. When they move near to the Sun's heat, the ice melts and turns to water and gas. This gas becomes the comet's tail.
When the comet moves away from the Sun, it gets colder and it loses its tail. Halley's comet is the most famous one. We can see it every 75 years.
Thousands of asteroids orbit the Sun. Asteroids are made of rock and they never have a tail.
Sometimes asteroids hit the Earth. An asteroid hit the Earth 66 millions years ago and it is believed that the impact caused the extinctions of the dinosaurs. Another asteroid hit the Earth in 2013. It disintegrated over a Russian region. Nobody died, but a lot of people were hurt.

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In 2004, the mission Huygens landed on Titan and  took photographs of Saturn and its moon. It doesn't look like a great place for a holiday and it's very cold!

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all the planets, except Mercury and Venus, have got moons. Some moons are very big. For example, Saturn's moon, Titan, is bigger than the planet Mercury. It's impossible to land on Saturn, because it's made of gas. But its moon, Titanis, is made of rock and ice.

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there is one more planet. it is Pluto

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there are 8 main planets in the solar system, 4 are made of gas and 4 are made of rock

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It is a star and light takes about 8 min to get to Earth.

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THERE ARE 4 MAIN PARTS

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THE SOLAR SYSTEM