Other Members and Beyond the Solar System

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Across
  1. 2. groups of stars and other space objects held together by gravity
  2. 4. decreasing illumination
  3. 7. a luminous ball of gas, mostly hydrogen and helium
  4. 8. a small space rock moving through a solar system
  5. 9. the moon is closest to earth
  6. 10. a meteor that reaches the surface of the earth
  7. 11. cloud of gas and dust
  8. 12. dirty "snowballs" in space
  9. 14. pictures in the sky
  10. 15. small, rocky objects that orbit the Sun
  11. 16. our milky way galaxy
Down
  1. 1. means expanding in illumination
  2. 3. regions of space with gravitational fields so strong that nothing, not even light, can escape
  3. 5. moon is less than half-illuminated
  4. 6. the moon is farthest from earth
  5. 7. a powerful and luminous explosion of a star
  6. 8. "shooting star"
  7. 9. changing shapes of the moon every night
  8. 13. more than half of the moon is lighted