This November 1st 2019 article by Joel Achenbach at the Washington Post
provides a succinct summary of the Hubble tension, that is, the differing
values various measurements are providing for the Hubble constant.
See :-
https://www.washingtonpost.com/scien...127_story.html
This 16m27s presentation by Fermilab’s Dr. Don Lincoln posted on YouTube
on 22 Oct 2019 attempts to address the question of "How far is the edge
of the universe?"
Lincoln touches on the observations of the CMB that suggest that space
is "flat" - or that it resembles being flat. A flat universe is a prediction
made by the cosmic inflation theory.
See :-
https://youtu.be/u23vZsJbrjE