star, a giant ball of hot, glowing matter, apparent, how something looks, solar system, the planets, asteroids, and comets that orbit the sun, as well as the planets' moons, inner planets, the four rocky planets closest to the sun, orbit, the curved path of an object around a star, a planet, or a moon, moon, a large, round piece of rock and ice that revolves around a planet, outer planets, the four large planets farthest from the sun that are made of ice and gases, asteroid, a chunk of rock in space that orbits the sun, comet, chunk of rock, dust, and ice with stretched-out orbits around the sun, perceive, to see or observe, galaxy, a collection of gas, dust, stars and their orbiting objects held together by gravity, light year, a unit of measurement equal to the distance that light travels in one year, or 9.46 trillion kilometers (5,880,000,000,000 miles), black hole, an area in space where gravity is so strong that nothing around it can escape, not even light, appear, to look like, diameter, a straight line extending from side to side through the center of a round figure

Science Topic 6

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