From the creators of the New York Times bestseller Invisible Things, this entertaining exploration of invisible mysteries is a mind-tickling, STEM-friendly invitation to explore the unseen world. The universe is full of Mysterious Things—lost things, forgotten things, things we don’t know, and even things we don’t know we don’t know! In fact, you might say the world contains more questions than answers! Questions like:What do dreams mean?What is at the bottom of the ocean?Where is that lost puzzle piece?If you’re ready to begin unravelling these mysteries and more, grab your detective’s hat or slip into your lab coat and come along on an exciting journey to embrace the unknown.