ommon solution. The effects of gravity and the apparent movement of matter at extremely high velocities explained a great deal.
Edwin Hubble showed in 1929, that the distance to a galaxy, measured from its redshift, is directly correlated with the velocity of its recession. In other words it could be shown definitively that all the massive objects in the universe were moving away from each other and away from some presumable common point which existed in the dim past (Van Norstrand's, 1984, 800). Hubble's law says that the velocity at which the universe is receding is equal to a constant, known as Hubble's constant, times the distance to that galaxy. If we follow Hubble's law backwards in time, we can deduce that all the matter in the universe was together at some instant, a time that has come to called the "big bang." The inverse of Hubble's constant, called the "Hubble age," corresponds to the time since the big bang on the assumption that the expansion has proceeded at a constant
...