outer space

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Across
  1. 1. way a large system of stars,one of which is our star
  2. 4. the name of our planet
  3. 7. system a system of planets including Earth and Sun
  4. 8. chemical element which has a symbol H2
  5. 9. the force which keeps space objects toward one
Down
  1. 2. a period of 365 days
  2. 3. a huge ball of glowing gas
  3. 5. the sizt of the sun
  4. 6. a celestial body that is in orbit around the sun
  5. 7. our star