Life on Earth..............................................................4-9

The Universe...........................................................10-13

Alien Sightings........................................................14-15

The Search is on....................................................16-17

Contents

Is there anything in space or is it just us? Well you can find out now by flipping through the pages of this book!

There are many different things that make life on earth possible, for example how we are just the right distance from the sun so that we are not too hot or too cold! Our atmosphere contains water vapor which helps to keep our daily temperatures balanced. Our atmosphere contains just the right mixture of gases for life to exist, including 21% oxygen, which is vital for life.

Life on Earth

All of the gases on earth play apart in helping us live, oxygen helps us breathe so that our bodies can function and stay stable. Without oxygen, we wouldn't be able to live! The Earth's location is key in allowing life to exist because it is in a location where debris and hazards are far away, if it was in a location where there is debris, there would be many collisions with Earth, making it impossible for life to flourish.

We wouldn't be able to live on any of the other planets in our solar system because we need all of the elements which are on Earth for life and all of the other planets do not contain everything that we need to live, especially water! In order to have life, we need water.

Scientists have sent rovers to Mars to search for signs of water and life, so far there has been no evidence of water or life.

There are billions of stars and millions of galaxies out there, how can it be that we're the only ones in the whole universe that exist? Could there be another planet just like Earth out there? Some say there must be life somewhere else in space.

The Universe

The Universe