... Okay so we live in curved spacetime and now you are telling me that the Universe is exanding: . ... Uniform Expansion of the Universe: . What's a Redshift? . How is the shift determined? . Why is it useful? ...
... Because observable Universe is tiny fraction of entire Universe, it appears very flat, just as a football field can appear quite flat while actually being part of curved surface of Earth . ...
... What do we know about the Universe, really: . Its expanding at a current rate of somewhere between 40 and 100 km/s mpc -1 . ... expansion, the expansion age is in the inverse of the rate: The expansion age of the Universe then is 10--25 billion years ...
... Everything was created in a Single Event The Third Cosmology: . Geometric Universe: . Sky Observations Motion . ... Greeks refined the geometric universe (and stole a lot of the math from the Babylonians). They defined. ...
... the earth from the center of the Universe and come up with something more sensible ... Elements of the Universe at this time (Aristotle): . Geocentric Cosmology . ... Universe is perfect and Changeless . Problems: . ...
... On the basis of two observations, 1) the Universe is currently in a state of uniform expansion and 2) the Universe is filled with photons that come from background radiation at a temperature of 2.74 K, we can construct our generic cosmological model known ...