Thursday, August 15, 2013

What's "outside" the universe?

An idea that is always weird and amazing to me:
"When the universe begins to expand, it won't be spreading out to fill a larger emptiness.  The only space that exists is the space it creates as it goes."
"The singularity has no 'around' around it."
That's from Bill Bryson's A Short History of Nearly Everything.

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