How did life on earth originate? Is life unique to Earth? How should we search for extraterrestrial life? They are both central questions in astrobiology. This is an exciting new discipline that incorporates research from microbiology, geology, astronomy and more. This book analyzes the factors that led to the creation and continuation of life on earth, and introduces the signs discovered when exploring the habitability of other planets, thereby providing clues for us to search for extraterrestrial life.
