What Are the Competing Theories in Astrophysics: Dark Matter vs MOND?

[Ironside]

Hey guys, sorry if I put this in the wrong section. Basically here's the thing, I have to do a research paper for my English class, and it is to be science related. That's all fine and dandy, but the thing is, the prof. said that the topic should have two sides to it, basically an argument to the topic at hand. That's the thing, even something like Evolution and Global Warming who in the public eye seems to have "arguments" , there isn't much arguments to find other than, "it's not true", especially arguments from respectable sources I would assume would be VERY hard to find. So I want to do something astrophysics based, a topic relating to this field, but I'm stuck.

What topics would you guys suggest to me that sort of have both arguments for it, and against it. Also remember, it's for english class so I can't really give anything more than simple statistics in terms of data. Any suggestions will be very helpful.

Thanks.

 

[Chronos]

Dark matter vs MOND.