It was an Earth satellite that started the space race between Russia and the United States. Russia sent Sputnik 1 into space in 1957, and the U.S. responded with Explorer 1 in 1958. In this high-interest title, reluctant readers will learn all about the machines that first signaled the space age.
People once believed that Earth was the center of the solar system. Scientists finally learned that Earth is one of at least eight planets in our solar system and that they all travel around the sun. Astronomers now know that our solar system is almost 5 billion years old and is part of at least 100 billion galaxies in the universe. Earth is the only planet known to have life and water. Scientists continue to discover new planet-like objects, called dwarf planets, all the time!
Long ago, astronomers believed that the Earth was the center of the universe. But now we know that it is only a tiny part of the universe and that our solar system is just a tiny part of our galaxy. In 1957, space travel began. Work done in space has helped us in the areas of medicine, computer science, and the environment. The International Space Station, a lab floating in space, is where astronauts do experiments that help us on Earth. The next manned trip to the moon is planned for 2018.
Learn About How Physics, Math, And Science Work Together To Help Us Understand Our Solar System And Beyond.
This Book Explores The Tremendous Contribution That NASA Has Made Over The Last Half Century. Detailed Timelines About Space Exploration And The Development Of The Space Program Are All Discussed In Detail. Also Gives Detailed Information About Astronauts And Their Explorations.
Five and counting! So far, astronomers have discovered five dwarf planets in our solar system. Pluto, which was once thought of as the ninth planet, is today classified as a dwarf planet. This book looks at the current dwarf planets, characteristics, size, and orbital patterns, as well as the three rules scientists follow to characterize these tiny, round space objects. Every day new discoveries are being made. Who knows how many dwarf planets we will find in the future! This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, and used as evidence.
Home, Sweet Home! This title is about Earth, the planet we live on! The layers of the Earth, how it relates to the other planets in our solar system, and how it is the only known planet to sustain life, as far as we know, are all discussed in this science title. Learn about how the Earth rotates on its axis, giving us day and night, and how it orbits and is warmed by that giant star we call the Sun. This book will allow students to make observations to determine the effect of sunlight on Earth’s surface.