Stars are born, mature, and eventually die, following processes shaped by physics and time scales that stretch across millions or billions of years.Stars are born, mature, and eventually die, following processes shaped by physics and time scales that stretch across millions or billions of years. This book traces that progression in clear, accessible language, guiding you from the formation of stars within clouds of gas and dust through their long periods of stable burning, and on to the varied ways they meet their end, whether as white dwarfs, neutron stars, or black holes. This book was written by an artificial intelligence and reviewed for accuracy and readability. In it, you will learn about the physical principles that govern stellar behavior, the classification systems astronomers use, and how different stellar masses lead to different outcomes. The text is organized to build understanding step by step, making it a suitable introduction for readers new to astronomy as well as a useful review for those seeking a clear, text based explanation of stellar evolution.Stars are born, mature, and eventually die, following processes shaped by physics and time scales that stretch across millions or billions of years. This book traces that progression in clear, accessible language, guiding you from the formation of stars within clouds of gas and dust through their long periods of stable burning, and on to the varied ways they meet their end, whether as white dwarfs, neutron stars, or black holes. This book was written by an artificial intelligence and reviewed for accuracy and readability. In it, you will learn about the physical principles that govern stellar behavior, the classification systems astronomers use, and how different stellar masses lead to different outcomes. The text is organized to build understanding step by step, making it a suitable introduction for readers new to astronomy as well as a useful review for those seeking a clear, text based explanation of stellar evolution.