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Across
  1. 4. a very young star that is still gathering mass
  2. 5. what is not a planet nor a star but millions of them are present in our solar system
  3. 8. Nearest major galaxy to our own
  4. 9. Christopher Onken discovered this
  5. 10. large group of stars
Down
  1. 1. commonly known as shooting stars
  2. 2. cosmic snowballs of frozen gases, rock, and dust that orbit the Sun
  3. 3. only natural satellite of the Earth
  4. 6. what are always moving moving, never tired and always admired
  5. 7. a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.