Correction: Oops, The Telescope Was Just Spinning Counter-Clockwise, Our Bad
James Webb Space Telescope reveals that most galaxies rotate clockwise
211–220 of 318 posts
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#212Earlier quoted context omitted.
why? if you subscribe to big bang then all matter got the same "initial kick". would be easier to assume same spin?
So what caused the "initial kick" to favor one side?
What caused this universe to favor matter over anti-matter?
So many unanswered questions.
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#213sorry if someone already asked this, but what is clockwise when there's no "up"? The earth axis is like 60 degrees off the axis of milky way, so it's not clear what the frame of reference is.
In theory it doesn't matter what the frame of reference is.
Instead of thinking of it like spin, think of it like heads or tails. Both are binary measures and frame of reference doesn't matter. For example if you're flipping a penny on a glass table and someone is looking from the bottom, they'll see the same ratio as you.
In a fair universe you'd expect pretty much a 50/50 heads/tails clockwise/anti-clockwise outcome. But instead we something like 66/34 or 75/25. The actual direction of spin doesn't matter. The fact the measurement is unbalanced does.
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#214My clock also runs clockwise, when seen from one of two sides...
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#215> This preferred direction of spin might be due to one of two reasons: either our entire universe exists in a black hole, or astronomers have been measuring the universe’s expansion incorrectly This is the subtitle of the article. It’s such a great summary!
Of all the mind-boggling answers explaining this direction-of-spin thing, they picked the one saying "Hey actually you know what, our entire (mind-boggingly large) universe itself is located in a black hole. That'll explain things nicely."
I mean the universe in a black hole is one of the more common ideas in physics, though we don't have any evidence for it. So it's not surprising people pick it up and run with it.
With that said, when the universe was younger things were way way closer so would it be possible for things like very early massive quasars to inject powerful magnetic fields in the otherwise dark universe at this time and bias matter falling into galaxies to one direction or another?
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#216Earlier quoted context omitted.
> The observable universe is expanding into the unobservable universe. Is that so? My understanding is that it doesn't expend into something. And that it expend so fast that the edge of it becomes unobservable.
Space and time are related, and expanding rapidly since the Big Bang (though there was a time in the early universe when the expansion rate was faster). https://cds.cern.ch/images/CERN-HOMEWEB-PHO-2022-023-1 Observing the edge is effectively looking back in time, to see the conditions of the universe closer to the time of the Big Bang. New telescopes keep expanding that edge, and new particle colliders (such as those…
Wait, I get space expanding and accelerating.
I never considered time expanding (and accelerating?).
Is that even possible? What does that imply?
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#217Earlier quoted context omitted.
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.
There doesn’t need to be a reason, just random chance from gasses shifting around is sufficient.
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"
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#218They analysed only a small patch of sky, which could have a local relative rotation compared to our region of space.
Real science will be when they survey the entire sky, with many small deep-field images.
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#219Earlier quoted context omitted.
> The observable universe is expanding into the unobservable universe. Is that so? My understanding is that it doesn't expend into something. And that it expend so fast that the edge of it becomes unobservable.
Space and time are related, and expanding rapidly since the Big Bang (though there was a time in the early universe when the expansion rate was faster). https://cds.cern.ch/images/CERN-HOMEWEB-PHO-2022-023-1 Observing the edge is effectively looking back in time, to see the conditions of the universe closer to the time of the Big Bang. New telescopes keep expanding that edge, and new particle colliders (such as those…
I thought the expansion of space which is faster towards the event horizon has no impact on the Lorents factor. But I might be wrong.
Re: James Webb Space Telescope reveals that most galaxies rotate clockwise
#220Potentially a very dumb question, but seeing the difference between cyclones and hurricane on earth (clock-wise, anti-clock-wise)... Does it mean that we are, potentially, on one of two poles(?) of the observable universe, if we're observing most galaxies around us rotating a certain way?
Which also implies the universe, or our section of it, is rotating. Which raises the question: where did that angular momentum come from?
The same place the rest of the universe came from. A slight imbalance in the Matter-Antimatter distribution in the early universe