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Galaxies, Dark Matter and Active Galactic Nuclei.

Galaxies, Dark Matter and Active Galactic Nuclei.

A. How do we know that there’s dark matter in the universe, and what properties must it have?
B. What are active galactic nuclei and how do we know what their energy source is?
C. What are some ways that dark matter and active galactic nuclei can affect galaxy evolution?
500-550words

Include a brief introductory statement and concluding statement to the topic of each essay. 1 or 2 sentences for the introduction and conclusion is sufficient.

You must use a minimum of three references per essay, Wikipedia and other published scientific sources such as journal articles, magazines or newspaper articles. Your essays should not contain quotes from your references, rather you should paraphrase the material.

You can use any style you prefer (MLA, APA, etc.) in your reference list.

 

Galaxies, Dark Matter and Active Galactic Nuclei.

 

 

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