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352 points instagraham | 2 comments | | HN request time: 0.028s | source
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worldsayshi ◴[] No.43533522[source]
Clockwise relative to what? Does the universe have an "upwards" direction?

Or is it just relative to all the other galaxies?

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andrewaylett ◴[] No.43533588[source]
Clockwise relative to our viewpoint, while we would expect that we'd see an equal number rotating in either direction no matter which way we looked or where we were looking from.
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MichaelZuo ◴[] No.43533651[source]
How does that follow?

I imagine there was already a preferred spin of gases immediately after the big bang, just due to random chance, so why wouldn’t that be preserved more or less?

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namaria ◴[] No.43533671[source]
That's the thing, we don't know any reason for a preferred spin and assumed it would be equally distributed. So this is an interesting fact.
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MichaelZuo ◴[] No.43538937[source]
There doesn’t need to be a reason, just random chance from gasses shifting around is sufficient.
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hnaccount_rng ◴[] No.43540075[source]
I think you are misunderstanding the point being made: The _only_ random chance that is part of current models is "quantum uncertainty at big bang time" and we can give upper bounds for the variations that can be explained from that. So what's really being said here is "We found a significantly larger discrepancy between Milkyway-corotating galaxies and Milkyway-counterrotating galaxies than can be explained by ~initialisation randomness"
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MichaelZuo ◴[] No.43540414[source]
That doesn’t make sense, they can’t be assumed to have behaved like ideal gasses, thus turbulence alone can cause significant uncertainties.

Let alone all other possibilities combined.

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namaria ◴[] No.43543761{3}[source]
I don't get it, why did you ask for clarifications about why this was not expected if you're just going to be adamant it should have been expected?

Is it really your honest position that everyone has been doing cosmology wrong and you would have known better?

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MichaelZuo ◴[] No.43545875{4}[source]
I didn’t ask for clarifications… I asked how it followed…

Are you sure you understood the comments completely?

It’s my honest opinion that anyone assuming away phenomena like turbulence, without credible proof, cannot be relied upon to have accurate insights.

So yes whenever I do have better insights, than by definition that’s more than 100% of the population who do not.

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1. namaria ◴[] No.43550800{5}[source]
Right. I guess I did not understand your comment at all then. I am sorry I engaged.
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2. MichaelZuo ◴[] No.43553145[source]
Then why stick around for another reply that can only detract, or at best be neutral…?

It seems impossible for this to add to your argument.