Mercury

Mercury photography by the nasa

Mercury is the closest planet to the Sun. It is a barren, rocky planet that looks a lot like Earths moon. The surface of  Mercury is covered with huge holes, or craters, where rocks called meteorites have crashed into it.

The Sun

Like all the stars, the Sun is an enormous ball of exploding gas. It applies a pulling force (gravity)to everything within a range of around 6000 million km.

Galaxies

Galaxies are enormous groups of stars. They can contain millions or even billions of stars and there are millions of galaxies in the universe.
See more at the book: Space (www.usborne.com)

The Earth

Life exist on Earth because our planet is just the right distance from the sun for water to be liquid, rather than ice or gas.

The universe

The universe is so huge that no one really knows for sure exactly how big it is. It´s made up of billions of stars , planets, moons, enormous clouds of gas  and the giant empty spaces in between empty spaces in between.
*If you want to know more look in the book Space (usborne discovery)