Black holes are some of the most mysterious objects in the universe! They have a gravitational pull that's so strong that nothing can escape them. Black holes grow larger by attracting anything that's near them, including entire stars. This book takes readers on an exciting out-of-this-world voyage and uncovers cutting-edge technology while supporting STEM and NGSS standards. Each book contains fact boxes, sidebars, a glossary, an index, and places to go for more information"--