1. andrey_denisov says:

You probably meant dark matter and empty space, which is still filled with something. Even in a complete vacuum, there are virtual particles. What we cannot fix in any way, from the realm of mysticism, the spiritual, we accordingly cannot measure. Therefore, it is impossible to say how many percent it takes. Yes, and the question is whether it exists. Probably not. So that's not true. Although the data from the air may coincide with reality.

2. anna_yuzhnaya says:

Not true. Neither one nor the other can be counted and added up. If the number of atoms is still somehow, then how to calculate the sound? Or electromagnetic phenomena? And it is impossible to calculate intangible assets in principle. What's that supposed to mean? Count the joy? Add fear and then calculate the percentage? Bugoga! Although some “specialists” from the world of esotericism are trying.

3. stanislav_smirnov says:

smaller… Matter is made up of atoms. An atom is the distance between a nucleus and electrons. This distance is so great that we can confidently assume that the atom consists almost entirely of empty space. Matter occupies only one billionth of the total space in an atom. To get at least a rough idea of what this billion number is, we'll give you one good example here, borrowing it from the English biologist J. J. Feinberg:

“A billion is a million times a million. The difference between a million and a billion will be immediately clear to anyone who learns that a million seconds is only two weeks, and a billion seconds is already more than thirty thousand years.”

If we use the model of our planetary system, the distance between the nucleus and the electrons would be about as large as the distance between the Sun and the most distant planet — the cold, dark Pluto.

This distance can also be explained by another example. Imagine a hydrogen molecule . If you increase the nuclei of hydrogen atoms to the size of a soccer ball, then an electron with approximately the same size will rotate at a distance of about twenty-three kilometers from the soccer ball. And the rest of the space will remain empty. We will meet the next hydrogen atom nucleus in another twenty-three kilometers, since the distance between the hydrogen nuclei in our example will be about fifty kilometers.

4. ivan_petrov says:

The question is meaningless, since the concepts of “material” and “non-material”are not defined. For a quantitative assessment of matter in the universe, refer to any modern book on cosmology.