A Brief History of Time

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Across
  1. 6. branch of physics that describes the smallest particles and how they work, contradicts the Theory of Relativity
  2. 7. subatomic particles that make up hadrons (protons and neutrons)
  3. 8. Found that not everything has to orbit the Earth, also found 4 of Jupiter’s moons
  4. 12. number of flavors of quarks
  5. 13. shows us what a particle looks like from different directions
  6. 14. the redshift or blueshift of the light expelled of an object moving towards or away from us
  7. 15. Albert Einstein’s theory that combined the ideas of gravity, space, and time
  8. 16. the force that two bodies put on each other as a product of their masses
  9. 19. boundary of a black hole
  10. 20. regions where gravity is so strong that nothing can escape it
  11. 22. the measure of disorder in a system
  12. 24. force responsible for radioactivity
  13. 25. the point where something takes an infinite value
  14. 27. E=mc^2
  15. 28. the force that charged molecules exert
  16. 29. the force that holds neutrons, protons, and atomic nuclei together
Down
  1. 1. one of the first people to think the Earth is round
  2. 2. Geocentric model of the Solar System
  3. 3. ________ duality is the property of expressing properties of both waves and particles
  4. 4. narrator of the book, also did groundbreaking work with black holes
  5. 5. theory attempting to explain the combined forces
  6. 9. the electromagnetic and weak nuclear force acting as one at high temperatures
  7. 10. The principle that uses the fact that we can make observations as a base to describe things cosmologically
  8. 11. made the theory that the universe can expand, also made models to show it
  9. 17. The idea that the Universe is identical whichever direction we look in
  10. 18. The idea that the Universe is identical where ever we are
  11. 20. generally accepted theory of the beginning of the universe
  12. 21. the principle that we can’t know both the speed and location of an object with complete accuracy
  13. 23. Discovered that stars could collapse under their own gravity to reach extremely high densities
  14. 26. Laws of Motion