Our Mathematical Universe

Pretty interesting. You'll probably learn a lot, assuming you aren't an expert in cosmology already. It's pretty dense, so not the easiest read to get through. I like that the author lays out at the beginning which parts of the book are controversial, and which uncontroversial, at the beginning of the book.

It's arguable that I'll actually hold on to any of the physics discussed in its pages, but good to peer into the mind of a top cosmologist.