It isn't. Unless you mean why is matter considered mostly empty space, in which case the answer is: because it is. The space considered to be occupied by atoms is mostly the electron cloud, the nucleus only takes up a very small portion of the atom. For example, the nuclear diameter compared to the atomic diameter is 1:23000 for uranium and 1:145000 for hydrogen.
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Very probable this space is empty, is vacuum.
Yes. In 1908, Rutherford conducted an experiment of shooting a beam of alpha particles through a sheet of tinfoil. Most of the alpha particles went straight through the foil, which proves that there are empty spaces in atoms. And the rest of the particles that didn't go straight through the foil are deflected at acute angles, those particles are deflected by the positive nucleus in the center of the atoms.
Matter is made up of elements and compounds, which are made up of atoms. But in an atom, most of the volume that it takes up is empty space. So all matter is mostly made up of empty space.
The most abundant element in the universe is hydrogen, which makes up about three-quarters of all matter! Helium makes up most of the remaining 25%
2, the inner most cone and the outer.
No air
yes most of the universe is empty space
empty space
most of space is a vacuum
Nothing. That is the most common feature of outer space.
Most people who went into outer space have survived.
Essentially yes - it is empty space. there may be some stray particles now and then but for the most part it is empty.
Usually, in most substances the speed of light is slower than in empty space.
EMPTY SPACE! Over 99% of an atom is empty space. The nucleus is in the center and contains neutrons and protons and this is where most of the mass of an atom is.
electron cloud
Empty space.
Empty space.