Tech bytes. Exploring space

"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"--Provided by publisher.

"Space junk is any human-made object in orbit around Earth that no longer has a use-and it's a huge problem. This debris includes anything from large satellites and rocket parts to tiny screws and paint chips. Space junk can damage a spacecraft-and also cause issues for humans on Earth"--Provided by publisher.