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Drones have been in the news a lot over the last few years. From the flying unmanned aircraft used by the military to the quadcopters sold at toy stores and hobby shops, it's difficult to deny that drones are everywhere. This volume examines the science behind modern drone technology and helps young readers understand these complex machines. Full-color photographs and diagrams provide context to STEM concepts. Fact boxes provide additional support...
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The Soviet Union made history when it launched Sputnik I, the world's first artificial satellite. Now, more than half a century later, there are about 5,000 satellites in orbit around Earth. These marvels of modern technology perform many important tasks, from reconnaissance and navigation to communications and predicting the weather. Scientists have also sent satellites to orbit moons and other planets of our solar system. This volume examines the...