Chapter- 1The UniverseIn this whole universe, we live on a
small planet. Knowing what else is out
there in the universe has been one of
our biggest challenges and it simply
started with people looking at the sky.
We live on a small blue planet called
the Earth. It has an atmosphere. Space
exists on the top of the atmosphere. It
is a vast area of coldness and silent
ness, but it has many amazing
properties. Space was created with an
event called the „Big Bang.‟ Before big
bang, nothing existed in the universe,
not even light and time. A point having
0 length, width, height suddenly
exploded. At that time, a lot of gas was
created in the universe, so the universe