It is full of stars, arranged in enormous groups called galaxies. Earth and the
solar system it belongs to is located in the outer reaches of our own galaxy - the
The Milky Way is believed to contain more than 200 billion stars
and there are billion and billions of galaxies each with an enormous numbers of stars.Some
scientists believe the universe is actually infinite in size. Some have tried to make the
size of it more comprehendible for the human mind by comparing it to the number of grains
of sand on a beach.