Curious About the Universe Expanding

sphenisc said:
Georges Lemaître proposed the theory. Hoyle provided the name possibly in an attempt to disparage it.
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Yes.

That is why I said literally invented the 'Big Bang' theory as opposed to developing the big bang theory of the expanding universe, which he opposed.
 
Planigale said:
Yes.

That is why I said literally invented the 'Big Bang' theory as opposed to developing the big bang theory of the expanding universe, which he opposed.
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Hoyle though did advocate the steady state model, which despite what might be implied by its name, is still an expanding universe.
 
Mike Helland said:
Hoyle though did advocate the steady state model, which despite what might be implied by its name, is still an expanding universe.
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The followers of that particular model are few and far between, these days. Of the serious scientists that were part of the flock, Hoyle and the Burbidges are dead, as is Arp. The only one left of any note is Jayant Narlikar. And I'm sure I read somewhere that he only kept on with it to 'keep cosmologist on their toes', or words to that effect.
 
Mike Helland said:
It's a dumb model.

Space expands, and creates matter in the process.

The CMB put an end to that idea, but it's not a good one to start with.
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Hoyle was no dumb hick. It was a serious contender at one time.
 
Planigale said:
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Fred Hoyle (who literally invented the 'Big Bang' theory - certainly deserving a mention by Sheldon), was a proponent of the now discredited steady state theory of the universe.
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No he didn't, he is credited with being the first to coin the phrase "Big Bang", he used it a pejorative.
 
Not sure dark energy overcomes gravity locally in the presence of clumps of matter/energy (small scale structures), with most large scale separation being in the form of voids, so what's in store is epic loneliness as I understand it. Eventually, stellar death would do the rest in terms of turning out the lights. What I don't get is if remaining bodies would then ablate into the vacuum, or if gravity wouldn't rather retain the same local hold, which seems more consistent.
 
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Mike Helland said:
It's a dumb model.

Space expands, and creates matter in the process.

The CMB put an end to that idea, but it's not a good one to start with.
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Would that be energy converted to matter, matter popping in from another dimension like some of the particle theory models, or actual something out of nothing matter?
 
Skeptic Ginger said:
Would that be energy converted to matter, matter popping in from another dimension like some of the particle theory models, or actual something out of nothing matter?
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Created from a tensor field introduced into the Einstein field equations set to keep the density of an expanding Universe constant. It sounds a little wierd to us today, but no wierder than the dark energy field responsible for the accelerated rate of expansion. Hoyle's formalism is here for those that can follow it: https://articles.adsabs.harvard.edu/pdf/1948MNRAS.108..372H
 
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