This book is loads of fun. Bede's known more for his history writing than his scientific studies, but he was quite the mathematician and pretty fascinated with how the cosmos fit together. He's also a nice antidote to the idea (that won't seem to go away) that medieval people were anti-intellectual or hated science, or anything like that.
Bede's a big fan of a good synecdoche and he really likes finding ways in which the days of the week line up with Genesis story of Creation, and how they align with the different ages of human history, and how all of that can circle back around and be mirrored in a human lifetime. And if that's not your cup of tea, you can just read about Bede's guesses (wrong but pretty reasonable!) that thunder and earthquakes are caused by volatile trying to escape from clouds and mountains. Something for everybody.
The notes and introduction are fantastic, as well. I know it can be kind of annoying to flip back and forth between the actual text and endnotes, but it's definitely worth it in this case. Faith Wallis and Calvin Kendall know their stuff, and they take what could be a pretty inaccessible piece of writing and make it a lot of fun to read. Very clear and very insightful.