I The observable Universe and its shape

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The discussion centers on the shape and expansion of the universe, likening it to the surface of a balloon, which is a useful but imperfect analogy. Observations of distant galaxies reveal their past states due to the time it takes for light to reach us, indicating we see them as they were when the universe was smaller. The observable universe is described as spherical, yet its actual shape remains uncertain, with evidence suggesting it is flat rather than curved. The universe is theorized to be infinite, lacking a measurable edge or center, and its expansion does not imply a central point from which it grows. The nature of the universe's size and curvature continues to be a topic of debate among cosmologists.
  • #61
Droidriven said:
From whatever vantage point you are in at the time.
Yes, but 'frame of reference' is the usual term
 
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  • #62
Droidriven said:
I think you're improperly editing the posts you are quoting, make sure the

if I do this correctly the 'Lol, you did it again, look at your post.' will be missing.
 
  • #63
tobyr65 said:
if I do this correctly the 'Lol, you did it again, look at your post.' will be missing.
You got it, you just needed to the first quote tab with my username and post to be at the beginning of my post, then my entire post after that and a quote tab on the end and my whole post would display.

You don't see a "quote" button or a "reply" button under everyone's posts? Are you using PC/mobile browser or a mobile app to view the forum?

Anyway, this is off topic, I'm just trying to help save the confusion of quoting everyone and everyone quoting you.
 
  • #64
Droidriven said:
You don't see a "quote" button or a "reply" button under everyone's posts? Are you using PC/mobile browser or a mobile app to view the forum?

Anyway, this is off topic, I'm just trying to help save the confusion of quoting everyone and everyone quoting you.

I see them, I first used the reply but was told to use the info/help to do it right. That said to use the quote button which I do. But then I was deleting all but the quote part I wanted and leaving the bracketed, back slash QUOTE at the end. So to be clear I should leave in the beginning bracketed content and the end bracketed content?
 
  • #65
tobyr65 said:
I see them, I first used the reply but was told to use the info/help to do it right. That said to use the quote button which I do. But then I was deleting all but the quote part I wanted and leaving the bracketed, back slash QUOTE at the end. So to be clear I should leave in the beginning bracketed content and the end bracketed content?
Yes, leave the first quote bracket with the username, post number and member ID number inside the bracket, then the quoted post with a quote bracket on the end.
 
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  • #66
Droidriven said:
Yes, leave the first quote bracket with the username, post number and member ID number inside the bracket, then the quoted post with a quote bracket on the end.
And what is this reply do?
 
  • #67
tobyr65 said:
And what is this reply do?
Quote quotes, reply just replies

Now, back to topic
 
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  • #68
rootone said:
We do know that our observable universe is spherical and the centre of it is somewhere between your eyeballs.
Droidriven said:
From whatever vantage point you are in at the time.

To be as exact as I can be: The observable universe is a sphere centered between the average location of all your sensors looking outwards from your position in time looking backwards.
 
  • #69
Everybody: the observable universe is not positively "spherical" in the sense of having positive curvature. The curvature of the observable universe is zero to within a percent, making it consistent with flatness. The universe *does* have spherical symmetry, on account of global isotropy.
 

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