'Cosmic void' theory suggests our Universe is like Swiss cheese and we live in one of its holes
Source: Wired
'Cosmic void' theory suggests our Universe is like Swiss cheese and we live in one of its holes
Further weight has been added to the theory that says our
galactic neighbourhood is inside a void that happens to be
seven times larger than the Universe's average
By ABIGAIL BEALL
Wednesday 7 June 2017
Our galaxy is in a giant cosmic void that stretches 1 billion light-years across, according to recent research.
First proposed in 2013, the idea of the void came from observations that showed our galaxy lies in a relatively sparse area of the Universe, compared to the density of galaxies and planets elsewhere.
Imagine the Universe is a block of Swiss cheese. The filaments of matter, things like galaxies and stars, make up the cheese. Areas of relative nothingness in between are the holes in this cheese. In particular, the theory says our hole happens to be seven times larger than the average void, or 1 billion light-years across.
Now, physicists at the University of Wisconsin-Madison have added weight to this theory after showing the cosmic void idea can be used to solve another problem astronomers have observed; the expansion rate of the Universe.
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Read more: http://www.wired.co.uk/article/galaxy-massive-void
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green cheese, surrounded by Swiss cheese? 
(I am so sorry that my oh wow moment was immediately overshadowed by my imagination!)
