Looking for the title of a story
astronomers on Earth think something is up with the universe as a radio or light signal takes less time to get from Jupiter than it should
this makes them realise the universe is shrinking (something like "...but that would put it [Jupiter] in our backyard!")
they realise there is a super- or external-universe, I think they call it mu, which is impinging on ours and causing it to shrink
this means that the universe will get so small light won't be able to travel (but everybody and the world retains their relative proportions, never been able to figure that bit out). Think the story ends with a gathering of people in a theatre or similar, and as the light ends, I think someone recites "The Lord is my shepherd..."
You'd think with that amount of detail google would help me find it but no joy!
I seem to remember reading the above in a collection of short stories when I was a kid - this may be a mis-memory but I think it was in a collection with a story that I now know (after some digging) "The Nine Billion Names of" God by Arthur C Clarke - I think it was also in a collection with "The Quest for St Aquin" by Anthony Boucher - both of these were collected in "The Science Fiction Hall of Fame, Volume One, 1929–1964" but looking at the other storiesv (link below) none of them seem to match the shrinking universe story
I think there was another story in there about a society where to make everyone equal all intelligent people have dampeners fitted in their brains and one guy rebels? Might be a red herring though.
Any help greatly appreciated!