We know "dark matter is present because it affects the world in ways I do not know of.
Dark matter.
Current theory states that it's "dark energy".
stars take up most of the visible space in the night sky
'Dark matter' and 'dark energy' have not been observed or proven yet.
Dark matter is everywhere, there really is no place that has the most dark matter.
Dark matter is an unknowm form of matter.
There's no such thing as a "dark matter microscope." The whole point of dark matter is that it doesn't interact with electromagnetic radiation... if it did, it wouldn't be dark matter.
The opposite of dark matter is visible matter.
Dark matter's strength is proportional to it's mass. This means that more dark matter in one spot is stronger then a little bit of dark matter in that same spot.
dark matter
Dark matter is invisible. It doesn't interact with light.
Hooray for Dark Matter was created in 2005.
Cold Dark Matter was created in 1992.
The ISBN of Particle Dark Matter is 9780521763684.
Emre - Dark Matter - was created in 2004.
Dark Matter - series - was created in 2004.