astrology

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Across
  1. 3. long waves
  2. 6. All of space and everything in it
  3. 7. The initial explosion that resulted in the formation and expansion of the universe
  4. 8. Cosmic Microwave Background Radiation
  5. 9. protons, neutrons, electrons
Down
  1. 1. short waves
  2. 2. A collection of stars, dust, and gas bound together by gravity
  3. 4. two most abundant elements in the universe
  4. 5. scale that shows different types of light waves; range of frequencies & wavelengths