SPACEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

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Across
  1. 1. the same thing that holds our universe and many others.
  2. 3. what we all revolve around
  3. 5. the infinite vacuum we all exist in.
  4. 8. what universe we are located in
Down
  1. 2. can orbit stars or planets
  2. 4. located in galaxies
  3. 6. the very thing we live on
  4. 7. Have an icy trail upon orbit
  5. 9. the divide from inner and outer in our universe