Planetarium in a Book
![Planetarium in a Book](https://jetplanesandchampagne.com/wp-content/uploads/2018/03/Planetarium-In-a-Book-418x280.jpg)
Within its humble pages, you’ll find a playable paper instruments, perpetual calendars, and other 3-dimensional amenities. It is a prime example of an educational pop-up book done right, exploring topics such as astronomy, cryptography, and…