Big Bang Theory

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Across
  1. 2. The observed displacement from 2 viewpoints
  2. 5. 2 charged particles of opposite charges
  3. 7. Progression of events from past to future
  4. 8. Donut-shaped and a black hole in the middle
  5. 11. An object moving away from us
  6. 14. Empty space between celestial bodies
  7. 15. Region of space where time becomes infinite
Down
  1. 1. Any system of stars that make the universe
  2. 3. Made up of antimatter particles
  3. 4. Instrument that measures brightness
  4. 6. A type of star that pulsates radially
  5. 9. Study of the evolution of the universe
  6. 10. A unit of temperature
  7. 12. Period of rapid expansion of the universe
  8. 13. Determines how hot or cold something is