Death of Earth

        One of the exciting questions of the ancient times was about the death of our own planet Earth. Scientists all over the world struggled long enough to gather information to predict the fate of Earth. Given a choice between two- Death of Earth in ice or fire, scientists bantered each other with their theories and research work. Many theories were tossed out. The plausible answer to this question appears to be death of Earth in fire.
        It is now known that the source of energy of a star is the fission or fusion process taking place continuously. In our sun, fusion takes place in the core. It is believed that once our sun has used up its available hydrogen, then the sun will use the unburned helium which will expand into a red giant star. The size of this giant star is presumed to be as large as the orbit of Mars by Sir Michio Kaku. Consequently, the Earth is supposed to be vaporised by this event and hence will be the fate of our planet. But we need not worry about its end as we won't be there to witness the disaster.