Discusses how we know about black holes, how they affect matter around them, and what would happen if you got inside one.

Explains how birds fly, discusses the operation and exploits of flying machines, both ancient and modern, and speculates about flight technology of the future.

Looks at frozen planets, explores stars and black holes, and describes what satellites, probes and other spacecraft do.

Investigates the weather, mountain formation, ocean expansion, and other phenomena and forces of our planet.