Are We Alone?

Are we alone in the universe? Is life on Earth a rare occurrence, or is the cosmos teeming with it? This book begins with a simple question: what is life? It reveals that the carbon in our bodies was created by stars that died long before the sun was born, and explores the search for water on Mars and beneath the ice of distant moons. We learn how, in 1995, the first planet around a sun-like star was discovered, and how we now know thousands of planets and can analyze their atmospheres from the light of their stars.

Written in accessible language, this popular-science book requires no prior knowledge of physics—just curiosity. Each chapter concludes with a summary box, ensuring that readers can easily grasp the key concepts discussed. Written by Dr. Moataz Ibrahim, PhD in physics, this book is perfect for anyone eager to understand the universe and our place within it.