Astronomical terms

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Across
  1. 4. the opposite of the sun
  2. 6. a collection of billions of stars
  3. 7. pieces of Rock or metal that orbit around the sun
  4. 9. a person that travels through the universe
  5. 10. created of planets that orbit around the sun
  6. 12. a small particle of space material that floats around the universe
Down
  1. 1. known as snowballs of the solar system
  2. 2. the force that pulls things down
  3. 3. a measurement of time
  4. 5. a region in space that has such an enormous force of Gravity that light can not escape
  5. 8. something that shines in the sky
  6. 11. the layers of gas that surround planets