Solar System Vocabulary

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Across
  1. 1. group of billions of stars
  2. 8. a star and all of the objects that revolve around it
  3. 11. large object in space that orbits a star such as the sun
  4. 12. ball of ice, rock, frozen gases, and dust that orbits the sun
  5. 13. warming of the atmosphere because of trapped heat energy
  6. 14. asteroid that hits the surface of a planet
Down
  1. 2. envelope of gas surrounding an object in space
  2. 3. glowing ball of hot gas that makes its own energy and light
  3. 4. dark area on the sun's surface
  4. 5. process by which particles combine to form a new particle
  5. 6. natural satellite that orbits a planet
  6. 7. brief streak of light seen when an asteroid enters the earth's atmosphere
  7. 9. rocky object that orbits a star
  8. 10. region where most asteroids orbit the sun