What should I do for my space science project (I have to have a question for the project)?

I need to do a research project and make a poster for it, but I don't know what my topic should be. It has to be something in space (hurr durr), but it can't be something that's completely common knowledge (like the earth, meteors in general or the moon (it can be super specific though, just absolutely nothing on earth) or something) or theoretical. I was planning on doing Nebulae, but I need a question, and nebulae don't seem to have an answer.