Saturday, 20 April 2013

Universe

The Universe is defined as the totality of existence,including planets, stars, galaxies, the contents of intergalactic space, and all matter and energy.

To us Earth seems huge. it takes many hours to cross one side of the planet to the other in a plane. But beyond our Earth there are distances that are so vast that, while they can be described,they perhaps cannot really be fully appreciated

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