There is a large suite of scientific evidence that supports the picture of the expanding Universe and the Big Bang. What the expansion rate today is, however, has extraordinary implications for our cosmic origins, some of which may present a crisis of one set of expansion rate values is correct while another set is flawed. (NASA / GSFC)

Why Cosmology’s Expanding Universe Controversy Is An Even Bigger Problem Than You Realize

The Universe is expanding, but different techniques can’t agree on how fast. No matter what, something major has got to give.

Ethan Siegel
Jun 29, 2018 · 7 min read

Look out at a distant galaxy, and you’ll see it as it was in the distant past. But light arriving after…