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UNIVERSE AND MYSTERIES When I look upon the stars, the sky, the moon and the sun, many questions come to mind like how big are they?, how did they originate? , how long their life is?. For many years, human beings have been trying to find answers to these questions, but the answers to many of these questions are still unknown. Initially telescopes were used, but not enough information was obtained through telescopes. Then ,with advancement in technology, scientists started using satellites, rockets and space shuttles. As a result we lot of information was obtained and a separate branch called astronomy came into existence to do research and study the universe. Astronomers have found that the universe consists of galaxies, black holes, comets, planets, satellites. Stars contribute to the formation of galaxies and black holes. Galaxies are clusters of millions or t