SPACE

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Across
  1. 3. Closest planet to earth
  2. 6. The total sum of all matter and energy
  3. 10. A group of stars that create a pattern in the sky
Down
  1. 1. Cosmic snowballs made up of frozen gases
  2. 2. Made up of mainly hydrogen and helium
  3. 4. The largest moon in the solar system
  4. 5. Solid rocky and metal bodies found throughout the solar system
  5. 7. Its rotation is approximately 27 days
  6. 8. Has a temperature of about -212°C
  7. 9. Large balls of hot gas
  8. 11. Average size star that appears yellow when viewed from Earth but is white when viewed from space.