The Big Bang Theory

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Across
  1. 2. The range of frequencies of electromagnetic radiation, which contains microwaves.
  2. 4. The second element in the periodic table and the second element ever made. Also, it is the main gas used to fill balloons.
  3. 6. The first element to ever form, also is the first element in the periodic table.
  4. 7. Planet and star clusters
  5. 8. The creation of the universe
  6. 10. The subatomic particle that was responsible for the the creation of the universe
Down
  1. 1. Where all matter is located
  2. 3. The background noise of the big bang
  3. 5. The third planet from the Sun, which has the perfect conditions for life
  4. 9. The center of the solar system,