Space

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Across
  1. 2. Large astronomical body that isn't a star.
  2. 7. Full of light, bright or shining.
  3. 10. The study of everything in the universe beyond earth.
  4. 11. An invisible force that pulls down on an object.
  5. 12. Energy derived from or caused by the sun.
  6. 13. The path an object takes in space.
  7. 15. The measured distance above sea level.
Down
  1. 1. Large round object that circles the earth at night.
  2. 3. A natural light display that shimmers in the sky.
  3. 4. A huge collection of gas, dust and stars and their solar systems.
  4. 5. A large self-luminous celestial body of gas that shines in the sky.
  5. 6. A small icy object that orbits the sun.
  6. 8. Something small that orbits around something bigger.
  7. 9. It contains space and all it's matter and energy.
  8. 14. Gravitaional forces exerted on the earth by the moon.