In ancient civilizations, people believed that eclipses represented omens of disaster. Today, total solar eclipses are regarded as rare and wondrous spectacles. The Great American Eclipse of 2017 sparked nationwide enthusiasm, and another total solar eclipse will occur across a swath of the United States in 2024. This volume investigates the science and history of eclipses, explaining the astronomical phenomena in accessible terms. Readers will learn about the celestial circumstances that cause eclipses and what to expect during an eclipse. Features such as Think About It sidebars encourage readers to apply what they have learned to answer open-ended questions.