:: Space, stars ans slimy aliens.

Check this book out, space stars and slimy aliens. It is from the horrible sciences series.
Funny amusing book where you travel through the solar system with aliens and discover stars.

Most of it is true except for the slimy aliens.
Don't be to scared with the horrible stuff...

It's for children but of course if the adult wants to read it with the child...

:: The sun

The Sun is the closest star to us. It is also the largest object in the solar system (it is 109 times larger than the Earth). The sun is not unique in the universe because there are other stars, around which exoplanets turn (the sun is a star: a small yellow one) .

The Sun is composed of 75% hydrogen and 25% helium. The sun appeared at least 5 million years ago. Without it nothing would be living on Earth. The core is 15 million degrees Celsius.

:: Supernovae

Supernovae are the result of an explosion of a very big star which is finishing its life.

Supernovae are almost 8 times bigger than the sun. At some point, the supernova shines more than a galaxy and has more energy than 200 million stars like the sun!!!In the center of the supernova a star remains : it is called a pulsar.

Image via Wikipedia

:: Stars

Stars
Some of them are big blue ones, big red ones, yellow ones and red ones. Big blue ones are the hottest ones.
Red ones are stars at the end of their lives and they are the coldest ones.
Yellow stars are like our Sun (which is a yellow star!).
Red ones are the best known ones.
In countries that do not have too much polution we can sometimes see more than 3000 stars all over the sky.
The big ones are 100 to 200 times larger than the Sun. Stars are composed of gaz and fire.

:: Galaxies

There are more than billions of Galaxies in the universe.There are three kinds: Elliptic, Irregular and Spiral. Galaxies move around and crash into each other, our Galaxy also does that. When Galaxies crash, their stars don't get mixed up, they stay in their own galaxies.

Galaxies are a billion times shinier than the sun and once a man invented glasses so we could look at them.

• This is a spiral Galaxy in black and white (some look a bit different). Our Galaxy is a spiral one.

• These are some pictures of Irregular Galaxies.

Irregular Gallexies are normally in any shape and in any colour. Irregular Galaxies are my favourite ones.

• This is a picture of an elliptic galaxy. Around there are other galaxies.