What is the Universe expanding into..

Do you think there was anything before the big bang?

  • I don't think there was anything before the Big Bang

    Votes: 56 12.5%
  • I think something existed before the Big Bang

    Votes: 200 44.7%
  • I don't think the big bang happened

    Votes: 54 12.1%
  • I think the universe is part of a mutiverse

    Votes: 201 45.0%

  • Total voters
    447
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I had a go at that physics paper this morning. Completely beyond my pay-grade! I am not much good at algebra.

Those sterile neutrinos are extremely massive. 4.8 × 10^ 8 GeV. Way beyond the Higgs at 126 GeV.

Didn't understand a word of it. Oh well.
 
The hypothetical WIMPzilla is trilions of times more massive than any other proposed type of dark matter.

The hunt for these sterile neutrinos has been underway for some time, but it is possible that they may never be found.

Even if they can't be found, improvements in detector technology and techniques may lead to new discoveries in physics.
 
One way to hunt for sterile neutrinos is to use a process called “neutrino oscillation”, in which the three known kinds of neutrinos can transform into one another.

Experiments measuring these oscillations usually look at either how many of a given kind of neutrino appear in some situation, or how many disappear.

The experiment which originally inspired the sterile neutrino hypothesis was such an “appearance” experiment, however the MicroBooNE experiment at Fermilab has recently come back empty-handed.

https://newsroom.unsw.edu.au/news/science-tech/hunt-‘sterile-neutrinos’-hopes-undiscovered-particle-dashed-new-experiment#:~:text=Hunting for sterile neutrinos If sterile neutrinos exist,,kinds of neutrinos can transform into one another.

At the Baksan Neutrino Observatory in Russia, the 'Baksan Experiment on Sterile Transitions' (BEST) is currently being conducted with the aim of understanding sterile neutrinos.

https://en.wikipedia.org/wiki/Baksan_Neutrino_Observatory
 
I did find a science digest type link to this paper:

https://www.livescience.com/mirror-universe-explains-dark-matter

I was aware that a lot of particles are left-handed chirality, and the right handed ones are ghostly in terms of not interacting with our Universe.

If these folks have found a new symmetry in CPT, that does imply new Physics and new Conservation Laws. As far as I've got.

Now must finish the Peter Woit book. Much more readable. But still heavy going.
 

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Now must finish the Peter Woit book. Much more readable. But still heavy going.

I've found Sabine Hossenfelder's take on your book: https://backreaction.blogspot.com/2006/07/peter-woits-not-even-wrong.html

"Unfortunately, the whole purpose of the book - to point out the 'Failure of String Theory and the continuing challenge to unify the laws of physics' (subtitle) - makes the second part of the book a rather depressing read."

I hope finishing the book doesn't depress you, Steve! 😟
 
NASA's 'Mega Moon Rocket' has been rolled out onto the launch pad at Kennedy Space Centre.

Officially known as the 'Space Launch System' (SLS), this is NASA's most powerful rocket ever.

Pre-launch testing will now take place in advance of the Artemis 1 mission, when the mega rocket will carry an unmanned Orion MPCV (Multi-Purpose Crew Vehicle) to the Moon.

https://en.wikipedia.org/wiki/Artemis_1

https://en.wikipedia.org/wiki/Orion_(spacecraft)
 

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