Twenty Worlds

This is a book that introduces the extrasolar planets, the laws of the universe, and the methods of astronomical observation, aiming to introduce the wonderful alien world and the astronomical principles behind it to readers. In this book, the author introduces 20 completely different extrasolar planets, from their birth, development, death, to rebirth... Each planet far exceeds our current imagination and cognition. The author simplifies and visualizes complex and profound observation methods such as the transit method, making it easy for readers to understand and spark an interest in astronomy.