Exploring the Solar System: A History with 22 Activities.EXPLORING THE SOLAR SYSTEM solar system, the sun and the surrounding planets, natural satellites, dwarf planets, asteroids, meteoroids, and comets that are bound by its gravity. The sun is by far the most massive part of the solar system, containing almost 99.9% of the system's total mass. The principal members of the sun's retinue are the eight major planets; other parts of the solar system are discussed in separate articles: see comet, asteroid, and meteor.: A History with 22 Activities MARY KAY CARSON Perhaps even the earliest human beings gazed at the night sky and wondered about the mysteries of space. People first marked the passage of time beyond a single day by noting the movement of stars and planets with the naked eye. Eventually, scientists developed increasingly sophisticated tools and methods for exploring the heavens. Carson, an author of educational children's books, explains how scientists explore the solar system today and how the development of telescopes, rockets, satellites, and other technologies have led to great discoveries about other stars and planets. Galileo Galilei's invention of the telescope enabled him to observe the orbits of planets around the sun. William Herschel Herschel (hûr`shəl), family of distinguished English astronomers. Sir William HerschelSir William Herschel, 1738–1822, born Friedrich Wilhelm Herschel, was a great pioneer in the study of the stars. Born in Hanover, Germany, the son of a musician, he early became a skilled performer on several instruments.'s development of more-powerful telescopes led to his discovery of Uranus Uranus - Hideyuki Nakashima ftp://etlport.etl.go.jp/pub/uranus/ftp. |
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