Today while reading about optical impact, I learned about the capabilities of a spectrometer, as well as the history of the SDSS and how it was used to scope different areas of the sky.(like the galaxies, quasars, black holes, etc.) we also learned about supernovas.
Personally, the most interesting subjects for me were the supernovas and learning about dark matter/ black holes.
From the questions that were already present, would you add on to that question with new information you are given?