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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#5,901
A legend... David Attenborough...

938049d1617310062-universe-expanding-david-attenborough-jpg


"Here I am in the jungles of Borneo...etc." 🙂

His brother Dickie was a heck of an actor too. And producer.

In Which We Serve - YouTube

What a cast. John Mills, Celia Johnson. Noel Coward keeping a stiff upper lip. Marvellous. Carry on chaps. 😀
 
#5,904
benb said:
Those promos and sound effects remind me of USA station promos from two to four decades ago!
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Do you remember that US Air Force tv promo from back in about 1962? It consisted of an Air Force anthem and jets in the sky. I was 5 at the time. I loved it. I've looked for it on the net but to no avail. Another awesome one was a short commercial film promo of the Atlantic fishery. It consisted of dories as far as you could see, each with one man spear hooking huge 6-800lb tuna as they were jumping out of the water all around them. No sooner were they pulling one aboard when the next one was in the air getting speared, one after another. The men all looked like body builders. Amazing. No photo shop back then.
 
#5,906
No. It was close up with the others progressively further to infinity. But it was being filmed, not a still. They had big spear hooks on a long staff. As soon as they pulled one aboard they would immediately spear the next, non stop. Fabulous. Those days are no more.


I brought this up already and you presented the same pic 🙂
 
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#5,912
system7 said:
The Universe is 13.8 Bn years old. So how come the furthest edges are 46 Bn light years away? 😕
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46 billion light years is the radius of the observable universe. Beyond that radius, even light emitted at the Big Bang will not have had sufficient time to reach us.

The radius of the observable universe is calculated based on its rate of expansion, its current temperature and its composition - and not directly on its age. Sounds complicated and it is!

Beyond 46 billion light years the rest of the universe is unobservable. How big the whole universe is depends on its topology. If the universe curves back on itself then the universe may be at least 23 trillion light years in diameter, and contain a volume of space that's over 15 million times as large as the volume we can observe. 😱

Ask Ethan: How Large Is The Entire, Unobservable Universe?
 
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#5,916
Yes, physics is the gift that just keeps on giving! 😎

On my little 'keep fit' walks around my village, I've been following the progress of the replacement of old street lighting with new LED street lamps.

Physicist Isamu Akasaki, a co-winner of the 2014 Nobel Prize in physics for inventing the world’s first efficient blue light-emitting diodes, died just a few days ago at the age of 92.

His invention contributed to the bright and energy-saving white light sources known as LED lamps.

LEDs are one of many useful spinoffs from the basic science of quantum mechanics. However, it was 32 years afer the invention of the first red LED that Isamu Akasaki developed a semiconductor material (indium gallium nitride) with a high enough energy gap to produce blue light.

How Blue LEDs Work, and Why They Deserve the Physics Nobel | NOVA | PBS
 
#5,920
TNT said:
The 5th element.

Muons: '''Strong''' evidence found for a new force of nature - BBC News
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This news has made my muons go wobbly! 😀

Fermilab accelerated muons around a 14 metre ring and, when subjected to a magnetic field, they wobbled at a rate faster than predicted by the Standard Model of physics.

There's a 4.1 sigma or 1 in 40,000 chance that the results provide evidence for the existence of an undiscovered sub-atomic particle or a new fundamental force!

With these Fermilab results following on from the LHC ones we discussed earlier, it would appear that particle physics research is really hotting up at the moment.

Have the experimenters found a new force of nature that makes the muons wobble faster than expected?

Could this be associated with a new sub-atomic particle such as the hypothetical leptoquark or the Z' boson?

Watch this space! 😎

P.S. A muon is a fundamental particle similar to the electron, but with a mass 200 times greater. Muon - Wikipedia
 
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