17. Dark Matter
If you are into studying space, or interested in astrology, then you have most likely heard of the “so-called” dark matter that is found within space.
Throughout the universe, there is about 85% of materials that scientists are unable to determine or study, leaving them to call it dark matter. This weird dark space does not emit light or energy, and oddly enough, makes up a lot of space, totaling around 27% of the 85%.
Dark matter is made up of particles that go undetected with modern space equipment, and cannot be seen directly. Now, scientists are beginning to believe that dark matter is the culprit of the ever-expanding universe.