

Instead, they describe the rate at which particles randomly moved within the universe before slowing down, which in turn leads to the expansion of the universe as a whole.ĭark matter has never been identified under any scientific instrument. These categories have no conjunction with actual temperatures. Despite many speculations regarding the existence of dark matter, no one can clearly define what dark matter is made of.ĭark matter can be classified into three main categories - cold, warm, and hot. Dark matter on the other hand, could be made of both baryonic and non-baryonic matter. This consists of electrons, protons, and neutrons.

The universe is made up of baryonic matter. Its existence came to the fore because of its gravitational effects on matters that are visible in the universe.ĭescription: Scientists have been unable to directly observe dark matter since they do not emit light or energy. 27% of the matter in the universe is said to be dark matter.


Definition: Dark Matter is referred to the hypothetical matter that scientists have not been able to locate in the universe - either through telescopes or using any other technological method.
