Stars

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Across
  1. 2. A massive system of stars and planets
  2. 4. Used to observe stars and planets
  3. 7. The star at the centre of our solar system
  4. 8. Orbits a planet
  5. 9. Cloud of gas and dust where stars form
Down
  1. 1. Icy object with a glowing tail
  2. 3. Rocky object in space
  3. 5. Orbits a star
  4. 6. The path one object takes around another
  5. 7. A huge ball of hot gas that gives off light