Return to Earth! by Ray O'Ryan is an exciting science fiction book that takes readers on a thrilling adventure. This paperback edition is part of the Galaxy Zack series and is perfect for young readers. Join Zack as he returns to Earth and encounters new challenges and discoveries. Written by Ray O'Ryan, this book is sure to captivate readers with its engaging storyline and imaginative world. Get ready for an out-of-this-world reading experience with Return to Earth!