THE UNIVERSE

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Across
  1. 2. VENUS EARTH MARS MERCURY
  2. 8. LIFE OUTSIDE EARTH
  3. 9. URANUS JUPITER
  4. 12. STUDY OF LIFE EVERYWHERE
  5. 15. NEAREST STAR
  6. 16. INVISIBLE SUBSTANCE IN UNIVERSE
  7. 18. GAMMA RAY BURST
  8. 20. PLANET THAT GOT SCREWED OVER
  9. 21. INVISIBLE FORCE IN THE UNIVERSE
  10. 22. EARTHS NEAREST NEIGHBOR
  11. 23. SATURN JUPITER URANUS NEPTUNE PLUTO
Down
  1. 1. MYSTERYIOUS FORCE EXPANDS UNIVERSE
  2. 3. RED SPOT
  3. 4. FUSION ENERGY THAT POWERS STARS
  4. 5. SINGLE EVENT WHERE UNIVERSE BEGINS
  5. 6. LIGHT CANNOT ESCAPE THESE
  6. 7. MOTION OF AN OBJECT AROUND AN OBJECT
  7. 10. LARGE BALL OF GAS
  8. 11. COLLAPSING STAR
  9. 13. MILKY WAY
  10. 14. PROTECTS EARTH FROM COSMIC RAYS
  11. 17. GREAT DARK SPOT
  12. 19. SUPERNOVA