Space Crossword puzzle

12345678910
Across
  1. 3. There are 8 of them in our solar system
  2. 4. dark and has planets
  3. 6. our solar system
  4. 7. where we live
  5. 9. How we get to space
  6. 10. gives us heat
Down
  1. 1. multiple appear at night
  2. 2. all our planets are in this
  3. 5. dinosaurs became extinct because of them
  4. 8. shines bright in the night