In this work, you will discover the characteristics of 40 different potentially habitable planets and the characteristics of the stars that surround them. I have tried to emphasise the uniqueness of each planet by addressing factors such as surface conditions. For example, I have taken care to explain in simple language the distances of these planets from Earth. I invite you to a pleasant and knowledge-filled exploration of the depths of the universe. Remember, this book offers an interesting and enjoyable reading experience!