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Celestial Gifts
Galaxies are composed of stars in various stages of evolution, planets, glowing nebulae, dust, gas, and empty space. The galaxy with which we are most familiar is our own Milky Way. Early Greeks looked up into the starry sky and saw a glowing band of light. It looked like a river of milk; hence they gave it the name "Milky Way". That eventually became the name of our galaxy.Astronomy includes the study of planets and their satellites, comets and meteors, stars and interstellar matter, star systems known as galaxies, and clusters of galaxies. The curiosity of ancient peoples about day and night and the Sun, Moon, and stars led eventually to observations that the heavenly bodies appear to move in a regular manner. This movement proved to be useful in defining time, location, and directions on Earth. Astronomy grew out of problems originating with the first civilizations. Ancient peoples needed to establish the proper times for planting and harvesting crops and for religious celebrations. The movement of celestial bodies helped them keep track of time and helped them find bearings on long trading journeys or voyages.
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