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the act of spinning around an axis


one complete trip around an object in circular or nearly circular paths


the path an object takes as it travels around another object


a real or imaginary line that a spinning object turns around


a temporary state of being, often used to describe a change in the appearance of the moon


a force of attraction or pull between all objects


a piece of rock, ice, or metal that burns up in the Earth's atmosphere causing a streak of light to appear in the sky


a large sphere in space that obrits a star

solar system

the sun and all the objects that orbit around it


a hot sphere of gases in space that makes its own light


a group of stars that appear to form a pattern in the night sky

a blocking of the moon's light when the moon passes into Earth's shadow; happens when Earth is directly between the sun and the moon

lunar eclipse

a blocking of the sun's light that happens when Earth passes through the moon's shadow; at that time the moon is between the Earth and the sun

solar eclipse

apparent motion

the way something appears or seems to move; is not real motion ex:the sun appears to rise in the east and seems to set in the west

Jupiter, Saturn, Uranus, Neptune

Gas planets

Mercury, Venus, Earth, Mars

Rocky planets

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