AMA | September 2024

11500.305 - 11524.782 Sean Carroll

Here definitely the observations came first, and in particular the fact, the observational fact, that our universe looks pretty smooth and isotropic and geometrically flat. These were known for quite a long time, relatively long time. It wasn't until the 1970s that it was very specific. It was Jim Peebles and Robert Dickey who pointed out that these features are puzzling, right?