Big Bang Theory Vocabulary Project - Crossword Puzzle

123456789101112131415161718192021222324252627282930
Across
  1. 3. Stars which brigthen and dim periodically
  2. 5. The opposite effect is referred to asredshift
  3. 6. A theory of exponential expansion of space in the early universe
  4. 13. The average density of matter required for the Universe to just halt its expansion
  5. 14. A point at which a function takes an infinite value, especially in space-time when matter is infinitely dense, as at the center of a black hole.
  6. 15. The study of the relations between heat, work, temperature, and energy
  7. 16. Forces responsible for shaping the universe we inhabit.
  8. 17. Displacement of the spectrum of an astronomical object toward longer (red) wavelengths
  9. 19. The idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now
  10. 20. A completely empty space.
  11. 22. The science of the origin and development of the universe
  12. 24. An alternative term for the radiation era
  13. 25. Apparent displacement or the difference in apparent direction
  14. 26. Begins about 50,000 years after the Big Bang.
  15. 27. When two light nuclei merge to form a single heavier nucleus
  16. 28. The degree or intensity of heat present
  17. 29. The distance light travels in one year
  18. 30. A pair of equal and oppositely charged or magnetized poles separated by a distance.
Down
  1. 1. Lines used to identify atoms and molecules.
  2. 2. What is the twin of almost all the subatomic particles that make up our universe?
  3. 4. The changes in frequency of any kind of sound or light wave produced by a moving source with respect to an observer
  4. 7. What space telescope that was launched into low Earth orbit in 1990 and remains in operation?
  5. 8. The physical interaction among electric charges, magnetic moments, and the electromagnetic field.
  6. 9. What instruments that measure electromagnetic radiation?
  7. 10. A system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity
  8. 11. The SI base unit of thermodynamic temperature
  9. 12. The blackbody radiation at a temperature of 2.725 Kelvin
  10. 18. The moon is in?
  11. 21. 85% of the matter in the universe.
  12. 23. Gaia BH1 and Gaia BH2 are the closest to Earth