Solar system test

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Across
  1. 2. we live in the Milky Way…
  2. 6. scientists think we can live there.
  3. 7. It’s the reason we have heat
  4. 8. contains 100-200 billon galaxies
  5. 10. we have on gigantic one
Down
  1. 1. our space neighborhood
  2. 3. its the fastest planet
  3. 4. At its nearest to Earth,____is about 24 million (about 38 million kilometers) away
  4. 5. it circles around our solar system but its as thick as mars length from the sun
  5. 9. It’s perfect