News for hackers. Stuff that matters.

A comment on Some Physicists See Signs of Cosmic Strings from the Big Bang. Parent comment

Re:Some Physicists See Signs of Cosmic Strings from the Big ... by mhh__ on Tuesday September 29, 2020 @12:36PM (#24629935)
https://en.wikipedia.org/wiki/Cosmic_string

Not far enough down the line to understand either theory but "string" is overloaded.

[ Parent | on HN ]
Re:Some Physicists See Signs of Cosmic Strings from the Big ... by dfischer on Tuesday September 29, 2020 @02:40PM (#24631383)
I'm confused, "It is expected that at least one string per Hubble volume is formed." (10^31 cubic light years.) ... one string per an observable universe?

Or am I not thinking clearly?

[ Parent | on HN ]
Re:Some Physicists See Signs of Cosmic Strings from the Big ... by recursivecaveat on Tuesday September 29, 2020 @02:50PM (#24631500)
The observable universe is much larger than the hubble volume. I understand this to be due to changes in the rate or expansion of the universe over time, though I'm no astronomer myself.
[ Parent | on HN ]
Re:Some Physicists See Signs of Cosmic Strings from the Big ... by dfischer on Tuesday September 29, 2020 @04:56PM (#24632874)
The amount of "observable universes" would be at what number given that each one is a string? How many potential strings from the initial moment? Seems... just mind boggling.
[ Parent | on HN ]