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What goes up must come down.

Everybody knows that. But what is it that pulls everything from rocks to rockets toward the center of the earth? It's gravity. Nobody can say exactly what it is, but gravity is there, pulling on everything, all the time. With the help of an adventurous scientist and his fun-loving dog, you can read and find out about this mysterious force.

How does a magnet work? Why does a magnet pick up a paper clip but not a leaf or a penny? How can the whole world be a magnet? Read and find out more about how magnets work

Franklyn M. Branley's classic text is seamlessly updated by NCTE Orbis Pictus Award Honoree Carolyn Cinami DeCristofano in this reissue. Now rebranded with a new cover look, this book features rich vocabulary, fascinating sidebars and diagrams by artist True Kelley, and a find-out-more section with a glossary and step-by-step instructions on how to make your own magnet and find magnetic technology in the world around...

Where is it partly cloudy and 860F? Venus This classic picture book is a fascinating exploration of space written by children's nonfiction veteran and former chairman of the American Museum of Natural History-Hayden Planetarium Franklyn M. Branley and illustrated by Kevin O'Malley. Full of interesting facts about the eight planets in our solar system, including our very own Earth, this bestselling book also features photographs from Voyager and other space explorers.

Now rebranded with a new cover look, this book features a find out more section with instructions for making your own...

The sun shines down on us, giving warmth and light. But did you know that the sun also makes the seasons? As the earth makes one complete rotation around the sun every year, the seasons on the earth change--from winter to spring to summer to fall and back to winter again. Find out how the light from the sun affects life on the earth for all living things in this look at the only star in our solar system.

Now rebranded with a new cover look, this book features content-rich vocabulary, fascinating side bars and diagrams by bestselling illustrator Michael Rex, and a find out more...

If you lived on the moon, you would have two straight weeks of daylight and then two weeks of night On earth, we have both day and night in just twenty-four hours, thanks to the quick rotation of our planet.

Now rebranded with a new cover look, this classic picture book uses simple, fun diagrams and a guided experiment to explain what makes day and night. This book also includes a find out more section with additional activities to track nocturnal animals and to compare different times of day around the world.

This picture book is written by children's book veteran and former...

Snow is falling. Snow is wonderful - for sledding, for skiing, and for building snowmen. But did you know that snow can actually keep things warm? Find out how snow helpf plants, animals, and people to survive. But when a blizzard blows, watch out The snow that is so useful can be dangerous too.

Franklyn M. Branley and Holly Keller team up for a fun and colorful exploration of the world of snow, including experiments and activities for cold winter days. A Let's Read and Find Out Science book, for Stage 1.

Don't jump

If you're on the space shuttle, that is. Astronauts never jump in space. They usually drink out of straws, and they lift tons of equipment as if it were light as air. Find out more in this information-packed voyage into space.

What is it like?
For thousands of years people looked up at the moon and wondered about it. Now we know what the moon is like. There is no air on the moon and nothing grows, but there are towering mountains and deep craters--and much more

Colder than the desert, the hotter than the desert, the moon is an amazing place to explore.

Are the stars out tonight?

If they are, chances are you'll be able to spot the Big Dipper. The Big Dipper is one of the easiest constellations to recognize and this Let's-Read-and-Find-Out Science book will help young stargazers find it, and it's companion, the Little Dipper. And once you've begun to learn about the constellations, well, the sky's the limit

The sun brings heat, warmth, and energy to the Earth. What is the sun made of? How big is it? How far away? Read and find out

After rain comes down, the sun comes out and dries the puddles. But the water isn't gone. The heat from the sun has turned it into water vapor-it has evaporated. Eventually, this moisture in the air condenses to form new clouds. Soon the rain will fall again. Read on to find out all the ups and downpours of the water cycle