The solar system

1234567
Across
  1. 3. leftover remnants From the nation
  2. 4. known as dirty snowballs
  3. 5. of Rock floating through space
  4. 6. planets,smaller than a planet
  5. 7. atmosphere and lands on the planet's surface
Down
  1. 1. known as a shooting star
  2. 2. have it except mercury and venus
  3. 5. space rock that survives passage through