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Meet Matter they make up everything and is here to introduce you to the 118 chemical elements in the periodic table! Alongside Matter, students will be introduced to the discovery and classification of the elements. They'll journey all the way back to the Big Bang and travel through time to when chemical elements were discovered. Matter walks students through detailed images of the periodic table, explaining the meaning of element symbols, atomic numbers, periods, and groups. A handy glossary also helps to organize and define terms. To explore more of the reactive world of chemistry, check out other titles in the Building Blocks of Chemistry series!

Meet NASA inventor Stephanie Thomas! She's here to introduce readers to the fusionpowered spacecraft, a hyperpowered space ship that relies on fission rather than rocket fuel or electricity. Alongside Stephanie, readers will learn about how she and her team are designing the spacecraft by utilizing the power of radioactive materials and fission. They'll learn about energy sources, fusion power, electricity and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Penny Boston! She's here to introduce readers to Martian cave colonies. Alongside Penny, readers will learn about astrobiology and the possibilities of living in caves on Mars. They'll explore caves throughout the solar system, microbes, inflatable cave liners, bioreactors, and oxygen. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Jonathan Sauder! He's here to introduce readers to the clockwork Venus rover, a special spacecraft designed to explore the extreme surface of Venus. Alongside Jonathan, readers will learn about how he and his team designed the rover using clockwork and automaton technology. Students will be introduced to the process of technological design and the importance of space exploration. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Changkwon Kang! He's here to introduce readers to the Marsexploring flying swarm. Alongside Changkwon, readers will learn about insectinspired drones designed to explore the skies of Mars. They'll explore bioinspired design, animal flight, flexible wings, autonomy, and the impacts of gravity. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Anthony Longman! He's here to introduce readers to the expandable space habitat, an expanding home for astronauts to live in while exploring space. Alongside of Anthony, readers will learn about how he and his team are designing the habitat using tensegrity. They'll also be introduced to such space concepts as orbits, lunar cycles, asteroids, radiation, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Marco Pavone! He's here to introduce readers to leaping lowgravity rovers. Alongside Marco, readers will learn about the need for jumping rovers and the importance of studying small solar system bodies like asteroids and comets. They'll explore such concepts as gravity and internal actuation to understand how the rovers are designed to jump and move. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Dava Newman! She's here to introduce readers to the secondskin space suit. Alongside Dava, readers will learn about the next generation of space suits that use hightech materials. They'll explore the technology and concepts that Dava and her team draw on when designing the suits, including mechanical counterpressure, lines of nonextension, and shape memory materials. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Masahiro Ono! He's here to introduce readers to the importance of asteroid exploration. Alongside Masahiro, readers will learn about how he and his team are building a probe that can hitch itself to an asteroid. They'll learn about asteroids, the Kuiper belt, tether technology, carbon nanotubes, regenerative braking, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Bruce Wiegmann! He's here to introduce readers to the use of sails in space. Alongside Bruce, readers will learn about how he and his team are building a machine that can sail to the edge of the solar system. They'll learn about solar wind, the heliosphere, electric repulsion, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor William "Red" Whittaker! He's here to introduce readers to caves on other planets. Alongside Red, readers will learn about how he and his team develop robotic missions to explore caves on the moon and Mars. They'll learn about lava tubes, orbital scouting, underground exploration, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Robert Youngquist! He's here to introduce readers to solarsurfing space probes. Alongside Robert, readers will learn about heatresistant coating used on solar probes. They'll explore technology and concepts that Robert and his team draw on when designing the probes, including conduction, convection, radiation, solar energy, active thermal control, and solar white. The Inventor Challenge at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Kendra Short! She's here to introduce readers to her unique ideas for Mars probes. Alongside Kendra, readers will learn about how she and her team are building a printable spacecraft. They'll learn about Mars exploration, circuits, flexible electronics, women in engineering, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Philip Lubin! He's here to introduce readers to interstellar travel. Alongside Philip, readers will learn about his work on building lightsailing probes that can visit distant stars. They'll learn about stars, Proxima Centauri, solar sails, and laser power. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Robert Hoyt! He's here to introduce readers to technology capable of building large structures in space. Alongside Robert, readers will learn about how he and his team are developing a robotic technology to build spacecraft while in orbit. They'll learn about gravity, orbit, space exploration, additive manufacturing, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Meet NASA inventor Mason Peck! He's here to introduce readers to the use of underwater space technology. Alongside Mason, readers will learn about how he and his team are building squishy robots to explore the oceans on Europa. They'll learn about Europa's oceans, bioinspired tech, life underwater, and more. Students will learn about the process of technological design and the importance of space exploration. The Inventor Feature at the back of the book encourages readers to create their own inventions. For more information about interesting space inventions, check out other titles in the Out of This World series!

Why does pizza taste so good? When was the chocolate chip cookie invented? Should I wait to swim after I eat? We at World Book answer all of your random questions-and not only random questions about food and food's limits on fun. Answer Me This, World Book answers questions about such topics as technology, outer space, and animals, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

Do you wonder about how robots might exist alongside people? How can robots help us live better, more fulfilling lives? This book will introduce readers to the ways that robots can assist humans and help us accomplish tasks we can't do alone. They'll learn about robot astronauts, humanoid robots, androids, the uncanny valley, the Turing test, and more! The Hello, My Name Is feature will introduce students to a variety of reallife robots and their capabilities and features. For more content on the technical world of robots, check out other titles in the STEMfocused Robots series!

How does GPS work? How do mirrors work? How does a light bulb work? We at World Book answer all of your technologyrelated questions-and not only questions about how things work. Answer Me This, World Book answers questions about such topics as oceans, outer space, and animals, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

Can I eat a wolf for supper? Do emus bite? Is a blobfish made of jelly? We at World Book answer all of your wild animalrelated questions-and not only questions about animals eating stuff . . . or you eating animals. Answer Me This, World Book answers questions about such topics as technology, outer space, and oceans, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

How are rainbows formed? What do clouds feel like? Why is the sky blue? We at World Book answer all of your sciencerelated questions-and not only questions about things that happen above your head. Answer Me This, World Book answers questions about such topics as technology, outer space, and animals, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

Who was Marie Curie? Who was Confucius? Did George Washington Carver invent peanut butter? We at World Book answer all of your questions about people-and things that aren't people, like places. Answer Me This, World Book answers questions about such topics as technology, outer space, and animals, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

How does catnip affect cats and make them all loony? Why do dogs smell each other's behinds? Do hamsters ever throw up after all that spinning? We at World Book answer all of your petrelated questions-and not only questions about pets. Answer Me This, World Book answers questions about such topics as technology, outer space, and oceans, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

Did cavemen hunt dinosaurs? What was the biggest dinosaur skeleton ever found? Who would win in a fight: a shark or a dinosaur? We at World Book answer all of your prehistoric timesrelated questions-and not only questions about dinosaurs. Answer Me This, World Book answers questions about such topics as technology, outer space, and animals, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

What's the biggest shark? What's the smallest shark? Why do sharks have rough skin? We at World Book answer all of your oceanrelated questions-and not only questions about sharks. Answer Me This, World Book answers questions about such topics as technology, outer space, and pets, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.

How long will the sun burn? How hot can the sun be? Why does the sun go away at night? We at World Book answer all of your outer spacerelated questions-and not only questions about the sun. Answer Me This, World Book answers questions about such topics as technology, oceans, and animals, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.