THE UNIVERSE

The universe is the whole of existence ,all of space , matter , energy and time . The universe is so vast as to be unimaginable , but we do know that it is steadily  expanding following its beginning 13.8 million years ago in an explosive event called big bang .  people used to think of the universe as a giant sphere , but we know that things are not simple . the universe probably has no centre or outer edge . only a fraction of it  the observable universe is visible to us the whole universe may be vastly bigger than this .  The three dimensions of space are " bent " by the force of gravity from matter  in the universe into four dimension that we can't see. this is hard to visualize , so scientists use the metaphor of a  two dimensional rubber sheet to explain the idea . the mass of the universe could bend this rubber sheet in one of three ways , depending on how densely packed with matter the universe is most scientists now think the shape of the universe is flat .                                                                       BUY SMART WATCH : https://amzn.to/3UfTepC                            BUY FOR SHOES :https://amzn.to/3ftBtnY

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