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The Size of the Universe

The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. The Astronomers say that Over a century since Hubble’s first estimate for the rate of cosmic expansion, that number has been revised downwards time and time again and two competing forces – the pull of gravity and the outwards push of radiation – played a cosmic tug of war with the universe in its infancy. If the Universe is really expanding faster than we thought, it might be much younger than the currently accepted 13.8 billion years. How big do you think the Universe can be ?

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