This Book Is a Planetarium

A pop-up book that turns into six working inventions. Yes, really.

Created by artist Kelli Anderson, each page transforms into something unexpected: a planetarium that projects constellations, a stringed musical instrument, a geometric drawing tool, an infinite calendar, a secret message decoder, or a speaker that amplifies sound.

Along the way, clever explanations reveal the science behind each invention and how something as simple as paper can do such surprising things.

It's part book, part engineering experiment, and a reminder that even the most familiar objects can hold extraordinary possibilities.