M an has always wondered how the Universe orginated. A number of theories have been put forward to explain its origin. According to the 'Big Bang Theory', the Universe is the result of an explosion called the Big Bang. This explosion occurred about …

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The NASA Hubble Space Telescope, which weight 11 tonnes, is the largest space telescope.It is 13.1 meter long with a reflector of 240 centimeters in diameter. It was plased in the orbit, on April 24, 1990 by the space shuttle Discovery. NASA spend 2.1 billion…

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