"How big is big? How small is small? As an astronaut and citizen explorer, I love having someone explain some of the more puzzling aspects of our universe to me in terms that make sense. With Magnitude, my brain cried "Eureka!" every time I turned the page."
—Cady Coleman, PhD, former NASAAstronaut
"We live in a universe bigger and smaller than our brains can fathom. Magnitude is an enjoyable and essential guide to appreciating our place among it all."—Joe Hanson, author and host of It's Okay to Be Smart
"Arcand and Watzke have crafted a masterpiece. A must-read for anyone wishing to appreciate the richness of the cosmos from its microscopic building blocks to its largest structures."
—Avi Loeb, chair, Harvard Astronomy department
"Through clear text and illuminating illustrations, the authors tackle questions ranging from 'how does the mass of a human eyelash compare to the mass of the black hole at the center of our galaxy?' to 'how fast does a dentist's drill rotate?' A fascinating journey through the measure of all things."
—Mario Livio, astrophysicist, and author of Why?: What Makes Us Curious
"Magnitude brilliantly illustrates the relative scale of so many aspects of the universe that you will feel so much smarter about EVERYTHING after reading this!"—Curtis Wong, principal researcher, Microsoft Research