perfect vacuum
Purely imaginary. There is no such location; it cannot have a name.
matter
matter
space, time, and all the matter is in the universe.
Probably the best term to encompass all of those would be "the universe".
the universe
In space how much matter does an object contain?
It has mass and required space to contain its' existence.
Matter
Matter occupies space, and the space it takes up is called the volume of matter.
A vacuum by definition is an area in space devoid of matter.
Matter is the basis for everything. Anything that exists has matter. Dark matter are anomalies that cannot account for "missing matter". Matter does not contain the solar energy and radio signals that travel through "empty space".
Energy (such as light) and space (which may contain matter, but is not made out of it).
That's why it's called space, because there is so little matter in it.
Density is the amount of matter in a given space.
Anything which occupies space and have mass in it is called a Matter.
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