Download or read book Mysteries of Planets, Stars, and Galaxies written by Lela Nargi and published by . This book was released on 2020-08 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Does life exist somewhere other than Earth? How many planets are outside our galaxy? What happens when stars crash into each other? For a long time, people believed Earth was the only planet in the galaxy. Now we know the universe is much bigger. Budding astronomers will learn all about planets, stars, and galaxies, from what's already known to what scientists are still hoping to find out"--