Science book
A science book is a work of nonfiction, usually written by a scientist, researcher, or professor like Stephen Hawking (A Brief History of Time), or sometimes by a non-scientist such as Bill Bryson (A Short History of Nearly Everything). Usually these books are written for a wide audience presumed to have a general education rather than a specifically scientific training, as opposed to the very narrow audience that a scientific paper would have, and are therefore referred to as popular science.