I understanding the edge of the universe

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The discussion centers on understanding the concept of the universe's edge, emphasizing that there is no physical edge to the universe itself. Participants suggest resources like Wikipedia articles that explain the shape of the universe and the holographic principle without complex mathematics. They clarify that while there is no edge, the observable universe does have limits, which can be explored through recommended links. The conversation highlights the importance of grasping these concepts for aspiring theoretical physicists. Overall, the resources provided aim to simplify the understanding of these complex topics.
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HI , i am a student currently in class 10th , and i aspire to become a theoretical physicist . I particularly want to know about the edge of the universe when i become one . Any way , i have searched the net for many years of posts related to these topics , but most of that stuff is above me . Can someone please link me some good books or webpages which deal with these topics , but are devoid of complicating maths ? .. please
 
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sambarbarian said:
HI , i am a student currently in class 10th , and i aspire to become a theoretical physicist . I particularly want to know about the edge of the universe when i become one . Any way , i have searched the net for many years of posts related to these topics , but most of that stuff is above me . Can someone please link me some good books or webpages which deal with these topics , but are devoid of complicating maths ? .. please

Well you certainly don't need to be a theoretical physicist to understand about the edges of the universe -- specifically, there are none. A great place to start is the wikipedia article here:
http://en.wikipedia.org/wiki/Shape_of_the_Universe
Which contains no maths! If you understand this, it should be obvious why there can be no edges.
 
If there were an edge of the universe, we would have a front row seat. We reside at the most ancient point in the observable universe and it looks exactly the same in every direction - younger.
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
The formal paper is here. The Rutgers University news has published a story about an image being closely examined at their New Brunswick campus. Here is an excerpt: Computer modeling of the gravitational lens by Keeton and Eid showed that the four visible foreground galaxies causing the gravitational bending couldn’t explain the details of the five-image pattern. Only with the addition of a large, invisible mass, in this case, a dark matter halo, could the model match the observations...
Hi, I’m pretty new to cosmology and I’m trying to get my head around the Big Bang and the potential infinite extent of the universe as a whole. There’s lots of misleading info out there but this forum and a few others have helped me and I just wanted to check I have the right idea. The Big Bang was the creation of space and time. At this instant t=0 space was infinite in size but the scale factor was zero. I’m picturing it (hopefully correctly) like an excel spreadsheet with infinite...
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