What is the universe expanding into?

AI Thread Summary
The universe is expanding, as evidenced by Hubble's constant, but it is not expanding into anything. Physicists suggest that the concept of "expanding into" is a misunderstanding of the nature of space itself. Instead, the expansion occurs within the fabric of space-time, which is itself stretching. Many discussions already exist on this topic, indicating it is a common point of inquiry. Understanding this concept is crucial for grasping modern cosmology.
ojsimon
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Hi

I understand that the universe is expanding due to hubble's constant and the proof that this can show that the universe is expanding, i just would like to know what physicists suggest the universe is expanding into?

Thanks
 
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ojsimon said:
Hi

I understand that the universe is expanding due to hubble's constant and the proof that this can show that the universe is expanding, i just would like to know what physicists suggest the universe is expanding into?

Thanks

It is not expanding into anything at all. There are many threads on this topic already.
 
Sorry if there are other threads on it i didn't think to do a search before, sorry.
 
ojsimon said:
Sorry if there are other threads on it i didn't think to do a search before, sorry.

That's quite all right. I just figured it would be more content for you to read than a few lines in a post.
 

Thread 'Does it make sense to build new radio telescopes?'

TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
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Thread 'Could gamma-ray bursts have an intragalactic origin?'

Thread 'Could gamma-ray bursts have an intragalactic origin?'

This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
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Thread 'Could fast radio bursts be alien radar signals?'

Both have short pulses of emission and a wide spectral bandwidth, covering a wide variety of frequencies: "Fast Radio Bursts (FRBs) are detected over a wide range of radio frequencies, including frequencies around 1400 MHz, but have also been detected at lower frequencies, particularly in the 400–800 MHz range. Russian astronomers recently detected a powerful burst at 111 MHz, expanding our understanding of the FRB range. Frequency Ranges: 1400 MHz: Many of the known FRBs have been detected...
View full post »

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