Mars
People living on Earth may one day need to live on another planet.
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We will travel a lot around this website before looking more deeply at why.
Within the topic of climate change,
the oceans are rising,
protection from the Sun's rays is being lost,
and the number of humans on Earth is also rising.
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The Home page for the new Journey into Space for Children 8 to 12 website is here.
Before you start
There are new names and terms to understand as you time-travel through the website.***
Term A word or phrase used to describe a thing or to express an idea, especially in a particular kind of language or branch of study.
Time-travel Many science fiction stories such as Dr Who use time-travel to stir the imagination.
"Journey into space" was an very early example here.
When you arrive at the Starship Enterprise, imagination is introduced. "Space" is not as well understood as scientists would like. Without imagination, scientists as good as
Stephen Hawking may not have achieved as much as they'd like. 
Scientists carry out "thought experiments" which can include travel to the other side of the universe over many years. Imagination is an important part of the process.
Terms such as mass, matter and atoms can be found in astronomy etc books, on most science and astronomy websites, and they are seldom explained.
Many terms can be found on the Vocabulary page at the end of the website Mainly, they are explained in some detail on the relevant page.
Science includes VERY LARGE NUMBERS - VLNs.
Atoms are very important to understanding VLNs. Look at a human hair in a brush or comb. A human hair is about 1 million carbon atoms wide source
You will learn more about 3x1012 later. Also why some writers include the source of material they write about.
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