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To anyone who wants to visit the world above us

Table Of Contents

1. Our solar system………………………………………..4 

2. Gravity………………………………………………………..5

3. Stars…………………………………………………………..6

4. Black holes…………….….….….….….….….….….…..7

5. White holes….….….….….….….….….….….….….….8

6. Exoplanets………………..….….….….….….….….…...9

7. Quiz….….….….….….….….….….….….….….….…….11

Hey, have ever wondered if we’re alone?

In this book we will find out about our huge universe.

Fun fact: if the universe was the size of earth, we would be the size of atoms.

Our solar system 

Our planet is habitable only because of our sun, or sol. All the planets (balls of rock or gas) are different sizes. Earth is only the fourth smallest planet in our solar system. The planets are Mercury, Venus , Earth, Mars, Jupiter, Saturn, Uranus, Neptune. In the picture is the planet Saturn, a favourite object for many star gazers. 

Gravity 

You fall from the sofa, and bang your head. Gravity may seem annoying, but we need it. If there was no gravity, the moon would not be there. It would have floated away the time it formed. And you would too! Planets stay together because of gravity. The solar system works because of gravity. So the next time you fall over, don’t be too annoyed about it. 

Stars

Stars are the kings of solar systems! Our sun makes up 99.98% of ours. Stars glow because they’re turning hydrogen into helium.  This gives of light and heat. However, stars will run out of fuel. Stars like our sun turn into red giants, then wipes off its outer layer, 

and turn into white dwarfs.