Space and stuff!

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Across
  1. 2. The closest planet to the Sun
  2. 6. The sun and everything in orbit around it
  3. 7. Imaginary line through Earth from pole to pole
  4. 9. The 3rd planet from the Sun
  5. 10. Earth's path around the sun
  6. 11. A cool dude and a great teacher
Down
  1. 1. The 2nd planet from the Sun
  2. 3. A pattern of stars in our night sky
  3. 4. The 4th planet from the sun
  4. 5. Earth going around the Sun
  5. 6. Our Sun is a _____
  6. 8. Earth spinning on its axis