8-9 years

Discover the universe’s most incredible sights – and learn how to build them!Look inside planets and the sun, find out how rockets are launched, an...

Explore all the wonders of the ocean in one pocket-sized reference guide!From colossal whales to microscopic plankton, our vast oceans are teeming ...

Discover the fascinating world of inventions and technology. From the first tools to the latest gadgets, Pocket Genius: Inventions showcases key in...

From marvelous galleries of the Big Dipper, Little Dipper and other constellations to in-depth looks at Mercury, Venus, Earth, Mars, Saturn, Uranus...

Find out all about NASA in this out-of-this-world addition to the What Was? series. The National Aeronautics and Space Administration, better known...

A mesmerizing overview of the world as it was when glaciers covered the earth and long-extinct creatures like the woolly mammoths and saber-toothed...

Readers will want to grab a telescope and explore the night skies after finishing this overview of our solar system.Our solar system consists of ei...

Isaac Newton was always a loner, preferring to spend his time contemplating the mysteries of the universe. When the plague broke out in London in 1...

In 1978, Sally Ride, a PhD candidate at Standford University, responded to a newspaper ad to join the US astronaut program. She was accepted and be...