Explaining how non-physicists can do science, this guide aims to show that questions about Earth, the solar system and the universe beyond can be answered by observing, measuring and thinking. Following the work of scientists such as Hubble and Einstein, and asking questions about the age and weight of things, what things are made of and how far away they are, the authors lead us from looking at the stars to thinking about the origin of the universe. Off-mint with a felt-tip mark on lower trimmed edge.