However, modern scientists are now working with the hypothesis that there is a possibility of other forms of life existing on other planets. As a result of today's rapid scientific progress, we may soon find some living beings on other planets in the remotest parts of the galaxy system. Perhaps, we will find them subject to the same laws as ourselves. They might be physically quite different in both appearance, elements and chemical composition and exist in different dimensions. They might be far superior to us or they might be far inferior.
Earth is a tiny speck in a huge universe.
Sir James Jeans, the distinguished astrophysicist, estimates the whole universe to be about one thousand million times as big as the area of space that is visible through the telescope. In his book, The Mysterious Universe, he states that the total number of universes is probably something like the total number of grains of sand on all the sea shores of the world. Such is the vastness of the cosmos. When we consider the vastness of the many universes making up what is popularly known as ' outer space ' , the hypothesis that other-world systems might exist is scientifically feasible. In the light of modern scientific discoveries, we can appreciate the limitations of the human world.