Nancy Dickmann

Questioning established knowledge isn't usually a popular course of action. Galileo learned this throughout his life as he tested scientific theories using mathematical calculations. He challenged the Catholic Church and Aristotle, which got him into trouble, but also added him to the pantheon of great scientists. Readers learn all about Galileo's most important discoveries through the story of his life, complete with historical images. Sidebars add detail and understandable explanations to the main content, including concepts such as the scientific method and the planets orbiting the sun.

This visually stunning guide gives an up-close look at some of the more elusive objects in space. Definitions of better-known objects, such as comets, as well as lesser-known objects, such as centaurs and trojans, give a basic understanding of space objects and the history of how they were discovered. It also covers the scientists who theorized about their existence and the later scientists who actually discovered them. Readers will also get a look at how these objects can impact our future life and the plans scientists have for how we might learn more about them.

Stargazers have observed Mercury, Venus, and Mars--the other small, rocky planets in our solar system besides Earth--for thousands of years. More recently, we have begun to explore our neighbors in outer space via flyby spacecraft, probes, and rovers. Readers will learn how these expeditions have expanded our knowledge of these planets' atmospheres, surfaces, features, and even potential for life. A must-read for anyone interested in discovering more about space exploration's past, present, and future.

Make a place for fruits in your diet. Once readers find out how nutritional fruit is, in addition to being delicious, they'll make a point to have it regularly. Read this book to learn about how to eat well and use MyPlate.

It takes a lot of hard work to run a farm. In this title, readers will learn what jobs farmers do every day to keep machinery operating smoothly, animals fed, and crops harvested.

From familiar farm animals to funny ones, this book introduces children to animals, such as chickens, pigs, and llamas, that are found on farms around the world.

Before you go apple picking, read this book to find out how apples are created. From seed to seedling, tree to blossom, flower to fruit, the life cycle of an apple is beautiful to see. This title shows the reader how an apple begins life, grows, and reproduces.