These terms describe concepts that essentially don't function the way things in the material world do. What do you all think they are?
The way I think of it, dark matter (to put it simply) is just the potential of matter to to be in a certain location at a certain moment. This potential represents the possibility that at any moment (especially the moment of observation) there could be matter there. The fact that this potential is timeless (by the very nature of probability) means that something with no real mass can still have gravity. In other words, you have gravity through time, and not just space.

What do you all think?
EDIT: Just found a Wikipedia page on "dark energy"... 70% of our Universe is in the "form" of this? haha And we claim to know how the Universe works without knowing a thing about how this stuff works?
http://en.wikipedia.org/wiki/Dark_energy