What Is The Vacuum Of Space

Outer space or simply space is the expanse that exists beyond earth and between celestial bodies.

What is the vacuum of space. This definition is referring to a high or hard vacuum. A vacuum is space devoid of matter. So space by its very definition in english language is emptiness.

The word stems from the latin adjective vacuus for vacant or void. Millions of miles separate the two relatively small objects. But the vacuum of space is the opposite.

Figure 1 illustrates that relationship of absolute and gauge pressure with 0 psia equal to a high or hard vacuum. By definition vacuum is a space that is partially exhausted as to the highest degree possible by artificial means such as an air pump. It is a condition well below normal atmospheric pressure and is measured in units of pressure the pascal.

W hen we say outer space the space outside the atmosphere of planets and stars is a vacuum or is empty we really mean that outer space is nearly empty or almost a perfect vacuum. Imagine how far the earth is from the sun. Outer space is not completely empty it is a hard vacuum containing a low density of particles predominantly a plasma of hydrogen and helium as well as electromagnetic radiation magnetic fields neutrinos dust and cosmic rays.

Space is a vacuum because the word vacuum means empty space. Vacuums are a lack of anything. The word stems from the latin adjective vacuus for vacant or void an approximation of a vacuum is a region with a gaseous pressure much less than atmospheric pressure.

By definition a vacuum is devoid of matter. Space is almost an absolute vacuum not because of suction but because it s nearly empty. Vacuum space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there.