Currently in the universe is where we live ,on the planet known as the earth,though it is said that some people live on other planets like the moon and others,when a wise man called galileo discovered that the earth is round he was mudered. though also some researchers say that the world is flat.But today we are convinced that the earth is around or spherical by shape, this can be proved by seeing the photograph of the earth taken from the surface of the moon.
It was said that the photograph was taken from a space craft passing low over the surface of the moon looking across a distance of 385000 kilometers to the planet earth.
The earth seen from space is a beautiful blue planet with white clouds moving across the surface .75% of its surface appears blue representing water in the ocean while the brown patches represents continents like Africa, Asia and many others.
As known on the contrary the surface of the earth is bare, consisting of a rocky surface with no water , no atmosphere no life.
The moon is the first body in the solar system on which vihicles from the earth landed .and the only one to be explored by humans.
The sun is the main source of light and heat recieved at earth , the sun is at a distance of 149597893km from the earth , it has a diameter of 1391940 km . this is more than 100 times larger than the earth .its mass is equivalent to 99.98% of the entire solar system .
conclusively its very difficult for us to understand the reak size of the universe and quantity of mass bodies it contains, considering the distance from the earth to the sun and the heat of the sun we have no hope that man will ever reach the sun, since no body has ever lived for more than 10000 years we still have no hope of ever travelling and landing on the nearest star where light takes 3 years to reach.