Hi Kris,
First, I would start with looking at some of the images in the deep space section. These can give some interesting persectives on our universe and what is out there. Then you can think of, how do some of these things come into existing and what/how do we explain them?
IE What is a planterary nebula and how do they form? What is a Herbig Harrow object? What is Bok Globule? What is the "dust" that appears in so many images? What is happening in Eta Carinae?
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