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Purely imaginary. There is no such location; it cannot have a name.
perfect vacuum
The big bang theory does not state that "the universe began with a gigantic explosion." The theory suggests that our universe originated from an infinitesimally small point called a singularity. Since all of space was all localized within this point, the rapid expansion of the universe isn't an explosion. An explosion occurs within space, but the expansion of space itself isn't an explosion. Quite simply, there isn't anything outside of space for the universe to explode into. Thus the "big bang" wasn't big, nor did it go bang. Around the time of the big bang (about 13.7 billion years ago), the universe was much hotter and expanding very rapidly (somewhat analogous to an explosion but by no means an actual explosion).
matter
matter
No. An explosion is an expansion of matter from a central point of high density to outer points of lower density. This is NOT what happened during the Big Bang, despite numerous popular presentations to that effect. The Big Bang was NOT an expansion of dense matter from a central point into empty space. It was an expansion of space itself.
He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".He announced the details of a plan for the expansion of Germany. It was called Lebensraum, meaning "living space".
theory of relativity
Matter
Matter occupies space, and the space it takes up is called the volume of matter.
There is no opposite of dark energy in the sense that there exists something that is the exact opposite of dark energy. Dark energy speeds the rate of expansion of space, even empty space, and gravity, mass, or matter causes the opposite in that it causes a decrease in the rate of expansion of space in areas that have matter.
That's why it's called space, because there is so little matter in it.
The expansion of the Universe should not be thought as if matter expands quickly in an existing space; it is space itself that is expanding. This is a confusing topic; read the Wikipedia article on "metric expansion of space" for a brief introduction.
That our Universe began with an explosion of matter, from a central point in space of high density to parts of space of low density. It was not an explosion at all, it was an expansion. And it wasn't of matter, it was of space itself.
We didn't, the big bang was a rapid expansion of space-time. The formation of the universe, not a literal explosion of matter. Really good question though.
Density is the amount of matter in a given space.
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