Here's what I read on Homeboy's Astronomy blog that stood out to me:
Thinking about the size of this massive black hole (18 billion Suns) makes me quiet. I would somehow understand a size of 18 Suns or even 1800 Suns, but 18 billion is just too much.
D and I were trying to visualize, even imagine this at all but we both had to admit, we just can't. Our reaction was the same as the writer of the blog, we just silently looked at each other trying and it just couldn't happen.
D liked the information about black holes, his friend C preferred the photo and information on the space station.