FYI, their "new and improved" 13.8+- billion year figure involves some additional 'tweaks' from Planck data sets, but it's essentially the same concept. Without the space expansion component, it really doesn't make much sense. Matter itself is limited to moving at the speed of light, so if objects themselves were expanding and moving, a 13.8 billion year old universe could not possibly be larger than 27.6 billion light years in diameter. Since they threw in a magic space expansion component, their mythical universe can be any size at all, simply by tweaking the space expansion component of the calculation.
Upvote
0