Zoom off into the galaxy and investigate all the planets, from Earth to Mars with First Space Encyclopedia.

Packed full of...

Important historical topics from the Stone Age and Ancient Egypt to the US Civil War and World War II are clearly explained in...

All the most important science topics for kids, from magnets and sound waves to flight and search engines, are simply explained...

The only encyclopedia for kids ages 5 and up that covers the subjects of human geography, physical geography, and geology...