1. expansion
  2. The Big Bang
  3. an infinitely dense point
  4. Time and space
  5. Flat
  6. the universe will expand forever, but the speed will eventually decrease to zero.
  7. Open
  8. the universe will expand forever
  9. Closed
  10. the universe will eventually stop expanding, collapsing on itself
  11. Cause another big bang
  12. the universe's density being less than the critical density
  13. the universe's density being greater than the critical density
  14. the force of gravity to stop the expansion
  15. it is accelerating
  16. another form of matter with strong negative pressure
  17. Dark energy
  18. play a part in the evolution of the universe
  19. it is believed the universe will expand forever
  20. it is shaped like a saddle
  21. the universe's density being equal to the critical density
  22. it is shaped like a piece of paper
  23. solar systems
  24. expand
  25. gravitational pull
  26. red shifting
  27. a result of light traveling through expanding space where the wavelength is stretched
  28. radiation (an isotropic radiation bath) with temp of 2.7 degrees Kelvin
  29. it is shaped like a sphere
  30. cooled remnants of a fiery origin
  31. The Inflation Theory
  32. the universe expanded for a fleeting moment at its beginning at a much higher rate than was expected for the big bang.
  33. 10-35 seconds after the creation of the universe
  34. Ashley and Sarah