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asteroids rocky metallic objects that orbit the sun but are too small to be considered planets celestial having to do with the sky object something you can see or touch comets balls of ice, rock, and dust in space with a tail galaxy a cluster of stars, dust and gases held together by gravity planets large bodies that orbit the sun satellites any object that revolves around another object in space star hot, glowing ball of gases distance the property created by the space between two objects or points force a push or a pull exerted on an object gravity the force of attraction between all masses in the universe gravitational What type of weight is responsible for a person's weight mass the property of a body that causes it to have weight in a gravitational field scale the ratio between the size of something and a representation of it Solar system the sun with the celestial bodies that revolve around it in its gravitational field constellation a configuration of stars as seen from the earth milky way galaxy the galaxy we live in speed of light the speed at which light travels telescope a magnifier of images of distant objects universe everything that exists anywhere sun any star around which a planetary system evolves light year the distance that light travels in a vacuum in 1 year