Did you know that companies and governments send more than one hundred satellites into space every year? And that most of those satellites continue to orbit Earth-even after they have stopped working? More than 500,000 old satellites, pieces of metal, and other bits of junk currently pollute Earth's orbit. And that number is growing. Astronomers, engineers, and politicians all agree that the future of space exploration is in danger if this debris isn't taken care of. But the problem of garbage in space is difficult and expensive to solve. In this book, learn more about this problem and its potential solutions.
"Middle schoolers with stars in their eyes will gravitate toward this informative set that explores aspects of space from the physical to the theoretical. Familiar topics dedicated to astronauts and missions to Mars are included alongside less common ones, including space garbage, privatized space travel, and black holes. All the titles include up-to-date content as recent as 2016, making them fre
School Library Journal
"Space is a perennially high-interest topic, and while there are plenty of series on the subject, these titles in the Space Discovery Guides series stand out from the crowd with plenty of up-to-date content, engaging layouts, and a lively tone. Astronauts covers notable space travelers, challenges facing people who visit space, and what astronauts can help researchers on Earth learn. With increase
