The Universe

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Across
  1. 2. balls with shiny tails.
  2. 4. /It's a star that explodes
  3. 5. / It is a substance that occupies empty space
  4. 8. /Star groups
  5. 9. /They hover around the stars in orbits.
  6. 10. /They are the very bright spots that we see at night in the sky.
Down
  1. 1. /Huge cloud of space dust
  2. 3. /
  3. 6. /Small spheres of ice and rocks that revolve around the planets
  4. 7. /It's a giant ball of incandescent gas.