Читать книгу Universe: The story of the Universe, from earliest times to our continuing discoveries - Peter Grego - Страница 18

On a clear night it’s possible to see hundreds of stars from a rural location. Each one is a relatively nearby member of our home galaxy, whose further reaches dissolve into a glowing band called the Milky Way.

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Beginnings

As we probe further into the depths of space, we are looking ever further back in time towards the beginning of the Universe. That beginning, thought to have taken place less than 14 billion years ago, may have been a single ‘Big Bang’ – the explosion of a primeval atom which created spacetime and matter. What caused this to occur, and what took place before the Big Bang, is still unknown.