If you're a space-nerd, there isn't much this covers that you haven't already read. The best parts were where the author covers Black holes (which is her research area) and it goes a bit in-depth. It is a very short afternoon read, and does give you a bit of awe at the huge scale of the universe. I learned some interesting things about galaxy formation theories and how black holes fit into them (do supermassive blackholes form first and galaxies form around them, or do galaxies form first, and black-holes settle at the centers?).

Can't wait for JWT to go up so we can answer more of these questions!