In 2006, Pluto was reclassified as a dwarf planet. Small, rocky dwarf planets make their home on the outer edges of the solar system. Scientists use telescopes to study Pluto and the dwarf planets as they orbit the Sun. Their fascinating findings are on display in this informative title about some of the solar system’s most far-away objects!
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.
Humans are pushing farther into space with the ingenious and ambitious innovations of space entrepreneurs. This engaging title describes the new ways entrepreneurs are using science and technology to take us beyond Earth—from satellite technology and imaging to new rockets and other ventures in space exploration. Detailed case studies of successful entrepreneurs and a hands-on project help readers understand the principles of entrepreneurship.
Astronomers look up into the sky and yearn to understand the universe. They ask questions about the distant stars and galaxies and wonder what lies beyond them. This title aims to create meaningful connections between the scientific concepts readers learn in the classroom and how they are applied in the real world by astronomers searching for answers.
Readers get acquainted with the people behind today's most cutting-edge technologies in the personal space travel field--from bright ideas to cool new products--and inspires readers to consider a high-tech future career. Careers in Personal Space Travel introduces six exciting careers and features sidebar activities that invite readers to Imagine That! and Dig Deeper! Includes table of contents, glossary, index, and supplementary backmatter.
A basic introduction to the sun, its size, composition, and place within our solar system.