I am searching for a book that contained a playable board game within its pages.
About the book
In the UK in the late 1980s, many schools participated in the Puffin Book Club, where pupils could buy at a discounted rate from a monthly selection of books by Puffin (Penguin's imprint for kids). I'm not sure, but I think that other, non-Puffin books were included in the selection as well.
I remember getting a large-format paperback book about astronomy and space science (quite similar in style to the Osborne books), possibly focusing on our solar system.
I can't find a back catalogue of Puffin books online, I'm not even sure it was a Puffin book, and the title could have been almost anything containing "space", "astro" or "solar", so finding it is a pretty tough task. I'd imagine it's likely it may have been republished internationally as well, so I'm hoping it may seem familiar to someone somewhere.
About the board game
The book included four (I think) board games, each of which took up a double-page spread in the book, where the board and rules were printed across the two pages. I'm not sure if you just drew the pieces on paper yourself, or if they were supplied in pull-out form.
The only game I remember was themed around mining in the asteroid belt. There was a large circular track of locations occupying most of the double-page spread, representing the asteroid belt, and there were pieces for the asteroids Ceres, Pallas, Juno and Vesta. Each turn, you would advance each of the asteroid counters one space around in its orbit. Each player also had a spaceship counter, which you would move slowly between the asteroids as you collected minerals by mining.
SE suggests "Solarquest" as a related topic, and the theme and ideas seem similar, and I suspect this game was influenced by Solarquest, but it's not the same thing.