The Universe is generally considered to be about 14 billion years old. There was an ‘inflationary period’, in which it underwent instant expansion, then abruptly slowed down to a more gentle rate which persists to the present day. This motion picture of the observable Universe derives from a ‘Hubble parameter’ H: A star’s radial recession rate v, divided by its ‘proper distance’ d; H = v/d . Both observed v and observed dobs from starlight are supposed to increase with cosmic redshift z, and v does, but for z > 1, dobs drops off. The current correction for this is to take the expansion of space over time into account, via integration. Integration is also used to calculate ‘lookback’ (t0 - t). Herein, the author shows that both d and (t0 - t) are calculable without integration, via the Lorentz factor γ: d = dobsγ and (t0 - t) = dobsγ2/c. This method is proper: Time does not elapse at the speed of light c, so space doesn’t expand for light. The Universe’s (t0 - t) is found this way as at least 170 billion years old. We also examine the slowdown of time in an increasingly dense Universe. Time came to a halt at a certain density.