Jazmin's Science Crossword Puzzle

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Across
  1. 4. biggest planet in our solar system
  2. 5. large spiral system consisting of several hundred billion stars
  3. 7. small rocky body orbiting the sun (not a planet)
  4. 8. cloud of gas and dust in outer space
  5. 10. the collection of eight planets and their moons in orbit around the sun
Down
  1. 1. A dirty snowball
  2. 2. the only planet found to have life on it
  3. 3. objects that look like spiral shaped clouds which later were found to be galaxies themselves lying outside our milky-way galaxy
  4. 6. between the orbits of Mars and Jupiter in which most asteroids are found.
  5. 9. A planet that has a volcano on it
  6. 11. gives off heat planets orbit it and it's the only star in our solar system