Fact: Very little is known about dark matter, it makes up a large proportion of the mass of the universe, but scientists are yet to find out anything about it of get hold of any
It is only "Dark" because so little is known about it. Like the dark ages, they weren't pitch black all the time, it's just we know very little about them
Hum... Another detail... Darkmatter is incredibly dense. Tends to clot together and generates a powerfull gravitational field. Probably is much heavier than common elements.
Also should not be confused with "Dark Energy" - that is the also not well known force that makes the universe still be expanding.
@Shinseiden(View Post) the powder toy's gravity mapping is not fast enough to keep up with powders, this is the reason for SING not having a gravotational field.