The Day We Found the Universe by Marcia Bartusiak.I just loved this title; “The Day We *Found* the Universe?”I thought “It was hiding somewhere?”Well, Edwin Hubble found it under his bed, or more accurately, Hubble built a telescope strong enough to see beyond our Milky Way, and on December 30, 1924, he shared his discovery with the American Association for the Advancement of Science and so astronomy as we understand it was born.This history of the study of astronomy is fascinating, and accessible to non-scientists.From chapters entitled “A Rather Remarkable Number of Nebulae” to “Your Calculations Are Correct, but Your Physical Insight Is Abominable” Bartusiak provides a basis to understand how the development of stronger tools to study our world does control how we understand it, and alludes to the problems of empiricism, how we can only know what we can see or hear.If we only know the universe through what instruments allow us to see, how can we understand how big infinity really is? And how can we possibly understand our world if we can’t know what we don’t know until we build stronger tools?