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: 53 12.4%
  • I think something existed before the Big Bang

    Votes: 189 44.4%
  • I don't think the big bang happened

    Votes: 52 12.2%
  • I think the universe is part of a mutiverse

    Votes: 193 45.3%

  • Total voters
    426
I wonder about you sometimes, Galu! Do Ye not know that you are allowed 30 minutes to edit before a subsequent post?

Not many people know this, but the UK has won more Nobel Prizes, per capita of population, than any other Country. :)

I have been continuing my UK researches into the best time to swim at Portsmouth, UK, Beach.

Low Tide, 9AM yesterday was a disaster. Awful rip-current that took me Eastwards. Seems to switch abruptly. A 20 minute margin calling for great precision.

Much more success with 3.5 Hours before Low Tide this morning.

Anywhoo, have been investigating the question of Supernovas, Kilonovas and Novas.

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

A matter of simple Elemental Chemistry, IMO. White Dwarfs accrete Matter from a nearby Red Giant Star. Bright explosions.

Excellent technical Chemistry book acquired today:

IM000081.JPG
Dwarfs accrete

Picked it up for 50p at the local Marie Curie Cancer Nurses Charity Shop. A worthy cause.

Starts with discussion of of the Bohr Hydrogen Atom. A subject I cracked when 17. Moves onto Quantum Mechanics and Electron Spin.

Bit deeper... :(

My current opinion is the Universe is expanding EVERYWHERE. But in our local Virgo Cluster we have sufficient Mass to overcome it. :D
 
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Galu

Member
2018-04-17 6:50 pm
A matter of simple Elemental Chemistry, IMO.

Not "simple elemental chemistry" in the case of a kilonova, I would submit.

A neutron star merger creates heavy elements through the 'rapid neutron capture process', also known as the 'r-process'.

This is a process in which an atomic nucleus captures neutrons quickly enough to allow very heavy elements to be created.

The r-process also occurs in thermonuclear weapons, and was responsible for the initial discovery of the heavy elements einsteinium and fermium.
 

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myleftear

Member
Paid Member
2017-09-10 6:33 pm
Luzern

Galu

Member
2018-04-17 6:50 pm
Aha, so we are separating and interpunctuating the other way 'round: overhere, 1,001 is one and a thousandst... (What you are writing as 1.001) ;D

Now I'm confused! :D

I read that the Switzerland is unusual in using a point (.) as a decimal separator and an apostrophe (') as a thousands separator, as in 1'000'000.00

Is that correct?

EDIT: I'm not confused regarding the 1,001 and 1.001 comparison - that I understand! :cool:
 
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Galu

Member
2018-04-17 6:50 pm
Beware fake JWST images!

The attached image, posted on Twitter, was purported to be a JWST image of Proxima Centauri, the star closest to our Sun.

It was, in fact, just a slice of tasty chorizo!

And, it was a physicist wot dun it!!!! :nownow:
 

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Galu

Member
2018-04-17 6:50 pm
The age of one of the record-breaking galaxies that appeared in the JWST's first images has been called into question.

Based on how red the galaxy CEERS-DSFG-1 appeared, the JWST astronomers placed it just 220 million years after the Big Bang.

However, it may be that this is a 'dusty galaxy' which is absorbing the bluer wavelengths of starlight while allowing redder wavelengths to pass.

That would place the galaxy at 1.3 billion years after the Big Bang. If so, it's still old and far away, but not to any record-breaking extent.