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Joined 1 year ago
Cake day: July 24th, 2023
  • A_A@lemmy.catoScience@beehaw.org•JWST Spots Giant Black Holes All Over the Early Universe | Quanta Magazine
    1·
    1 year ago

    I do believe there is a strong link to be understood between what is observed in this post and what was posted :
    X-Ray echo suggests our galaxy was “active” (quasar-like) just 200 years ago - Nature
    by @CanadaPlus one month ago.
    Thanks for this (X-Ray echo) post and for the last comment you made here in the other thread, about Penroses’ current work.

    So I will read through some of this and try to come back with something worthwhile to say.

    Update : I read some more and most of that is just out of my reach. The only paragraph I kind of understand somewhat is this :

    (…) conformal cyclic cosmology (CCC) theory.[67] In this theory, Penrose postulates that at the end of the universe all matter is eventually contained within black holes which subsequently evaporate via Hawking radiation. At this point, everything contained within the universe consists of photons which “experience” neither time nor space. There is essentially no difference between an infinitely large universe consisting only of photons and an infinitely small universe consisting only of photons. Therefore, a singularity for a Big Bang and an infinitely expanded universe are equivalent. [68]

    …and now I need some rest.