(October 4, 2012 at 10:09 pm)popeyespappy Wrote: I don’t know if it has been proven, but is believed that the rate of expansion is accelerating therefore not a constant. But, is it accelerating at a constant exponential rate?
Yes, the units above should have been 74.3 +/- 2.1 kilometers per second per megaparsec, which is the rate of acceleration of expansion.