sun - the heavenly body in our solar system whose light makes our day and around which the planets revolve, star - any of the heavenly bodies except planets which are visible at night and look like fixed points of light, solar system - the sun and the planets, asteroids, comets, and meteors that revolve around it, neptune - the planet that is eighth in order of distance from the sun and has a diameter of about 31,000 miles, uranus - the planet that is seventh in order of distance from the sun and has a diameter of about 32,000 miles, saturn - the planet that is sixth in distance from the sun and has a diameter of about 75,000 miles, jupiter - the planet that is fifth in order of distance from the sun and is the largest of the planets with a diameter of about 89,000 miles, mars - the planet that is fourth in order of distance from the sun, is known for its redness, and has a diameter of about 4200 miles, earth - the planet that is third in distance from the sun. The planet that we live on., venus - the planet that is second in order of distance from the sun and has a diameter of about 7,500 miles, mercury - the planet that is nearest the sun and has a diameter of about 3000 miles, planet - any large heavenly body that orbits a star, moon - a smaller body that revolves around a planet, milky way - a broad band of light that stretches across the sky and is caused by the light of a very great number of faint stars, meteor - one of the small pieces of matter in the solar system that enter the earth's atmosphere where friction may cause them to glow and form a streak of light, galaxy - any one of the very large groups of stars that make up the universe, asteroid - one of thousands of rocky objects that move in orbits mostly between those of Mars and Jupiter and have diameters from a fraction of a mile to nearly 500 miles, dwarf planet - a heavenly body similar to a planet but too small to clear other objects from its orbit, comet - |a small bright heavenly body that develops a cloudy tail as it moves in an orbit around the sun, black hole - a heavenly body with such strong gravity that light cannot escape it and that is thought to be caused by the collapse of a massive star,

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