perfect vacuum
matter
Space is mostly made up of vacuum, which is space devoid of matter. However, space does contain small amounts of particles such as atoms, cosmic dust, and radiation. These particles are spread out across vast distances in space.
A space entirely devoid of matter is called a vacuum. It is a region where there is no physical substance present, including gas, liquid, or solid particles.
The area beyond space where no matter exists is often referred to as "void" or "vacuum." It is a hypothetical concept in physics used to describe a region devoid of matter and energy. This idea helps scientists understand the boundaries of the observable universe.
matter
the universe
A material that takes up space is called matter. Matter is anything that has mass and occupies space.
It has mass and required space to contain its' existence.
A vacuum by definition is an area in space devoid of matter.
Matter
A piece of matter moving through space is called an object or a particle.
The amount of matter in a given volume of space is called density.
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.
matter