Review Solar system

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Across
  1. 2. AN AREA WITH 100 BILLION STARS.
  2. 4. A PERSON WHO STUDIES THE UNIVERSE.
  3. 6. A PLANET THAT IS SAID NOT TO BE ONE ANYMORE.
  4. 7. THE 7th PLANET IN OUR SOLAR SYSTEM.
  5. 10. SPACE AND EVERYTHING IN IT.
  6. 11. A GALAXY WITH A ODD SHAPE.
Down
  1. 1. IT CAN HELP YOU SEE FAR AWAY.
  2. 3. A PERSON WHO STUDIES STARS AND PLANETS.
  3. 5. AFTER A MASSIVE STAR EXPLODES.
  4. 8. WHERE IS THE HUBBLE TELESCOPE ?
  5. 9. A GREEK WORD THAT MEANS FAR.