Tells the history of man studying Jupiter from the Sumerians to 2018, the publication date of the book. A lot of the book is the survey of Jovian study; we learn about Jupiter as scientists and amateurs did over time. Written in an informal and literary style, right at the edge of what laypeople can easily understand.
Lots of illustrations. Many of them, because of the limitations on the telescopes available, historical sketches. The most recent are photos from modern observations and the various missions to Jupiter. Should be interesting to both readers of the history of science and those more focused just on the current knowledge about Jupiter.