A Glimpse of Outer Space

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Across
  1. 2. a very large cloud of dust and gas in outer space.
  2. 7. One who studies stars and planets.
  3. 9. a bright object in space having a tail of dust/gas.
  4. 11. an extremely large group of stars and planets.
  5. 12. A celestial body moving around the earth.
Down
  1. 1. A creature from another planet.
  2. 3. All existing things in the space.
  3. 4. a large piece of rock from space that appear as a bright light.
  4. 5. a mass of rock that moves around in space.
  5. 6. A group of bright stars with a definite shape.
  6. 8. a natural object that moves around a planet.
  7. 10. a very small star that does not shine brightly.