The Big Bang Theory Vocabulary

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Across
  1. 2. the simplest and lightest chemical element
  2. 4. the scientific study of celestial objects
  3. 5. an american astronomer who revolutionized cosmology by proving that nebulae were independent galaxies
  4. 10. an american radio astronomer who, with arno penzias, discovered the cosmic microwave background CMB radiation
  5. 13. glow of electromagnetic radiation filling all space
  6. 16. gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter
  7. 17. a colorless, odorless, tasteless, and inert noble gas
  8. 18. a german physicist who developed the theory of relativity
Down
  1. 1. an american physicist and radio astronomer who co-discovered the cosmic microwave background CMB radiation
  2. 3. a british mathematician and astronomer
  3. 6. the entire range of all types of electromagnetic radiation
  4. 7. the totality of all space, time, matter, and energy in existence
  5. 8. the portion of the electromagnetic spectrum—ranging from approximately to nanometers
  6. 9. model explaining that the universe began approximately 13.8 billion years ago from an extremely hot, dense singularity
  7. 11. an instrument that separates radiation
  8. 12. the ability to do work
  9. 14. light or other electromagnetic radiation from an object is stretched
  10. 15. the decrease in wavelength