4. It Is Cold In Nature
Theories observe that Dark matter could be cold in nature. According to scientists they are responsible for the creation of dark matter that could not move quickly because if it does then all its properties would be suppressed and will lead to small-scale like structures.
More observational evidence claims that the gravitational pull under the atmospheric lenses, absorption features along the line-of-sight to distant objects, and tidal streams in the Milky Way – all three suggest that dark matter contains heavy mass, moves slowly, and is cold in nature.
As suggested and widely agreed, its properties are totally opposite of hot or warm. Now can we consider that as a piece of strong evidence? Why not!