Universe

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Across
  1. 2. The first element formed in the Universe.
  2. 5. Average distance from the sun from the Earth.
  3. 8. The largest planet in our solar system.
  4. 9. Theory for the formation of the Universe.
  5. 10. Evidence for the Big Bang.
  6. 12. A cloud of gas.
  7. 14. The stage of Earth's formation that humans live.
  8. 15. The galaxy that Earth is found.
Down
  1. 1. Distance light travels in one year.
  2. 3. Material that makes up the majority of the Universe.
  3. 4. The gas present in the greatest abundance in the Earth's Atmosphere.
  4. 6. Theory for the formation of the stars and planets.
  5. 7. The first stage of Earth's formation.
  6. 11. A single point in space where the Big Bang began.
  7. 13. A meteor that has landed on Earth.