Recent content by TonyB178

Thanks bapowell, the "jerk" of the scale factor is exactly what I was referring to. I had suspected we couldn't accurately measure it (yet), but I wasn't sure. I personally am a geophysiscist and while i look into cosmology and other areas of physics for fun and to better my understanding of...

So I know that the rate of expansion of the universe is increasing, i.e. the 2nd time derivative of the size of the universe is positive. But, is the next time derivative (i.e. 3nd time derivative of the size of the universe) positive of negative? Do we have enough information to determine this...