Today’s ‘Galaxy’ Insight — “The Cosmos Five-Billion Years in the Future”

 

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β€œIn 5 billion years, the expansion of the universe will have progressed to the point where all other galaxies will have receded beyond detection. Indeed, they will be receding faster than the speed of light, so detection will be impossible. Future civilizations will discover science and all its laws, and never know about other galaxies or the cosmic background radiation. They will inevitably come to the wrong conclusion about the universe……We live in a special time, the only time, where we can observationally verify that we live in a special time.”

― Lawrence M. Krauss, A Universe from Nothing: Why There Is Something Rather Than Nothing

 

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The image at the top of the page shows galaxy, NGC 6503, that has found itself in a lonely position at the edge of a strangely empty patch of space called the Local Void, a patch of space thought to be about 150 million light-years across that seems to be curiously devoid of galaxies. Astronomers using Hubble discovered that the emptiness of this region has quite an effect on the space around us — the Milky Way is being strongly pulled away from it by the gentle but relentless tug of other nearby galaxies.

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