Universe

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Across
  1. 2. A rotating, flattened disk of gas and dust
  2. 3. First element on the periodic table
  3. 6. baby planets
  4. 8. Mysterious force that's causing the rate of expansion of our universe to accelerate over time, rather than to slow down
  5. 10. Hypothetical form of matter that forms 85% of our universe that causes dark energy
  6. 11. if the nebula clouds get too big, gravity wins and they can start to _______
  7. 13. The "Gas giant"
  8. 14. The planet we live on
Down
  1. 1. Celestial body moving around a star
  2. 4. Curved path of a celestial object around a star, planet, or moon
  3. 5. Creation of universe
  4. 7. The solar system's star
  5. 9. The exact opposite of matter annihilate each other when they come in contact
  6. 11. extraterrestrial dust or space dust
  7. 12. Massive self-luminous celestial body of gas that shines by radiation