I am writing a paper on dark matter, and I came across the subject of the "cosmic microwave background" during my research. If anyone could explain either what it is or how it is significant in the perspective of studying dark matter, it would be greatly appreciated!

Question

anonymous · Answer

The cosmic microwave background is a background shown on radio-telescopes that is supposedly remnant energy.  It is called "microwave" because the energy form is most apparent around those wave-lengths.  It has been and continues to spread, since the universe's beginning and therefore is all over, causing it to be a "background" for space.
From what I understand (don't quote me) it is only related to dark matter in that it is thought to be one of the "first forms of light" and to have come from dark matter/energy.  Therefore it is thought to be more directly connected with the stuff and more observable than other parts of Dark matter.
It is also known of as "Relic Matter" because it is a left-over/trace remain of previous matter. 
Not sure how much this helped... I just did some reading and summarizing.  Good luck on the paper.

snowfire · Answer

Thanks, every bit helps.