Space Vocabulary

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Across
  1. 3. The outermost part of the Sun's atmosphere
  2. 5. A group or stars or galaxies which are held together by their common gravity
  3. 6. A sensitive radiation detector
  4. 9. The smallest particle of any element
  5. 10. The compactness of matter.
Down
  1. 1. A small, frozen mass of dust and gas revolving around the sun
  2. 2. A group of atoms linked together.
  3. 4. A rock, or Minor Planet orbiting the Sun
  4. 7. The path the Sun, Moon, and planets all follow in the sky
  5. 8. A group of stars, gas and dust held together by gravity