Introduction to Astronomy: From Atomic Nuclei to Galaxy Superclusters

The Ultimate Guide to the International Olympiad on Astronomy and Astrophysics (IOAA) and Undergraduate Astrophysics Are you a high school student aiming for a Gold Medal at the IOAA? Or a university student looking for a clear, mathematically rigorous introduction to the cosmos? Written by Dr. Gergely Dálya, an astrophysicist, former IOAA competitor, and the longtime leader of the Hungarian and Saudi Arabian national IOAA preparations, this textbook bridges the gap between popular science and advanced academic treatises. While most astronomy books are either too simple (lacking math) or too complex (assuming post-graduate knowledge), Introduction to Astronomy is specifically designed to take you from high school physics to competitive mastery. This material has served as the official preparation textbook for the Hungarian IOAA team and is a foundational text at multiple universities. Now available in English for the first time, it provides the exact theoretical framework and problem-solving intuition required to compete at the highest international levels. Why this book is a must-have for IOAA contestants and Physics students: Proven Elite Pedagogy: Developed through 10+ years of coaching medal-winning national teams. The content is battle-tested and aligned perfectly with the IOAA syllabus. Integrated Problem Solving: Each chapter includes carefully selected solved exercises designed to bridge the gap between theory and complex astronomical calculations. A "Bridge" Textbook: Perfect for those who find "popular science" too shallow but aren't yet ready for graduate-level physics. It builds on high school mathematics to explain the complex physics of the universe. Research-Backed Insights: Learn from an award-winning researcher of the LIGO collaboration. Gain a deeper understanding of modern breakthroughs like gravitational waves and exoplanet detection methods. Stop guessing what will be on the exam. Study from the book that the leaders use. Whether you are a student chasing an international gold medal or an aspiring astrophysicist building your university foundation, this book provides the clarity and depth you need to succeed.