Void to the End of our Universe?: Exploring the Unknown

[David Fosco]

TL;DR Summary

What's on the other side

Is there a reason why we can't see what's on the other side of these Voids in Space? Are we to Believe it is Void to the End of our view of the universe?

 

[Helios]

Tell us what voids you are talking about. Why do you capitalize common nouns and the verb "believe"?

 

[phyzguy]

We can see what's on the other side of these voids. Why do you think we can't?

 

[Ibix]

Is there a reason why we can't see what's on the other side of these Voids in Space?

A reference or link is needed here. It isn't at all clear what voids you are talking about.

Are we to Believe it is Void to the End of our view of the universe?

Everywhere we look we see the cosmic microwave background. That's as far as we can see.

 

[Drakkith]

Is there a reason why we can't see what's on the other side of these Voids in Space? Are we to Believe it is Void to the End of our view of the universe?

Voids are large volumes of space with much less material in them than average. This means that there is even less material to absorb or scatter light than the rest of the universe, so we can easily see through them.

 

[Klystron]

Everywhere we look we see the cosmic microwave background. That's as far as we can see.

Voids are large volumes of space with much less material in them than average. This means that there is even less material to absorb or scatter light than the rest of the universe, so we can easily see through them.

Correct.

{Edit: Historical note removed. /Pre-Enlightenment scholars and philosophers spread much ink emphasizing and then denying voids existed based on the notion that the creator's light permeates the universe. A void without light/love contradicts universal redemption./}

Detecting the cosmic background radiation in all directions, and with predicted variations (anisotropy), {Edit: ibid. /replaced those old notions while ironically coinciding with the historical term: Enlightenment/}.

Here is a colored map of background radiation derived from the COBE anisotropy data.

(The black corners appear for contrast and do not represent voids)

 

[phinds]

Pre-Enlightenment scholars and philosophers spread much ink emphasizing and then denying voids existed based on the notion that the creator's light permeates the universe. A void without light/love contradicts universal redemption.

This is a science forum. It is pointless to bring up religious nonsense.

 

[vincenzosassone]

Summary:: What's on the other side

Is there a reason why we can't see what's on the other side of these Voids in Space? Are we to Believe it is Void to the End of our view of the universe?

There isn't true at all! These voids in space are the vacuum whom we talk about everywhere. This vacuum, unfortunately, isn't all absence of matter, in fact you have to take in account the possibility to meet some cosmic dust or something else. But it doesn't matter, the important stuff, here, is that there is approximatively nothing. Sounds cannot travel in the void, space in which there are no atoms, but light can. This vacuum is also in the space between two "solar" sistem, and look, we can watch stars!

 

[lomidrevo]

There isn't true at all! These voids in space are the vacuum whom we talk about everywhere. This vacuum, unfortunately, isn't all absence of matter, in fact you have to take in account the possibility to meet some cosmic dust or something else. But it doesn't matter, the important stuff, here, is that there is approximatively nothing. Sounds cannot travel in the void, space in which there are no atoms, but light can. This vacuum is also in the space between two "solar" sistem, and look, we can watch stars!

I think the definition of void in astronomy has slightly different meaning. It is relevant to very large scales, tens of megaparsecs. From wiki:

Cosmic voids are vast spaces between filaments (the largest-scale structures in the universe), which contain very few or no galaxies. Voids typically have a diameter of 10 to 100 megaparsecs; particularly large voids, defined by the absence of rich superclusters, are sometimes called supervoids. They have less than one tenth of the average density of matter abundance that is considered typical for the observable universe.

So the void can even contain entire galaxy, or more. What is important, the density of such region is much lower than average density of the (observable) universe.

 

[vincenzosassone]

I think the definition of void in astronomy has slightly different meaning. It is relevant to very large scales, tens of megaparsecs. From wiki:

So the void can even contain entire galaxy, or more. What is important, the density of such region is much lower than average density of the (observable) universe.

Very well, here I can't say anything...you're right. I was wrong, voids are regions very big in the scale of superclusters, if I understood correctly. Anways, now I read more about voids to fill this missing knowledge, many thanks for telling me this, and I also understood something else. Now I know that this voids are something bigger than galaxies, for this reason we cannot take in account them, but there is something in our galaxy of very important: vacuum between solar sistems. Have you ever wondered what there is between them? Now I tried to google it and I discovered there are many meteors with dust and gas... We cannot talk about total vacuum but there is more vacuum than mass, this means that atoms there cannot build a way for stars, or better, for their light. Maybe this is the most powerful proof that I can put here...
Even if there is another thing that I can say: we can watch the Sun, and between us and the Sun there are only two planets, something of useless to talk about and the famous cosmic dust, that not even in this case is useful because it doesn't cover oll the place. I'm sorry for the lenght, but I want to explain as detailed as possible this topic without imperfections. Obviously, if there are some imperfections, please tell me what is imperfect because this is all I know.Many thanks again!

 

[lomidrevo]

Very well, here I can't say anything...you're right. I was wrong

No worries, nobody knows everything.

Now I know that this voids are something bigger than galaxies, for this reason we cannot take in account them

As OP hasn't interacted with us at all, we don't know what he actually meant by void.

vacuum between solar sistems. Have you ever wondered what there is between them? Now I tried to google it and I discovered there are many meteors with dust and gas... We cannot talk about total vacuum

Sure, the space is not fully empty. But in average, it is much better vacuum than we are able to prepare in labs here on Earth.

this means that atoms there cannot build a way for stars, or better, for their light.

I am not sure what you are trying to say here. Light doesn't need any "way" build by atoms to propagate. Light travels in vacuum. I guess it is just typo, because in post #8 you have it correct.

 

[vincenzosassone]

I am not sure what you are trying to say here. Light doesn't need any "way" build by atoms to propagate. Light travels in vacuum. I guess it is just typo, because in post #8 you have it correct.

No, it isn't... In my 8th post, an in the 10th too, I only wanted to reply to the guy in the 1st post. There is something of very weird:

Summary:: What's on the other side

Is there a reason why we can't see what's on the other side of these Voids in Space?

As OP hasn't interacted with us at all, we don't know what he actually meant by void.

I don't know the meaning of the word OP, but if you mean David Fosco, I absolutely agree. This is the reason of my 10th post, I tried to find a way to show why light travel in the vacuum and in the voids too

 

[PeterDonis]

I don't know the meaning of the word OP

It means the Original Poster--the person who started this thread. Which would be @David Fosco in this case, yes.

 

[lomidrevo]

I don't know the meaning of the word OP, but if you mean David Fosco, I absolutely agree. This is the reason of my 10th post, I tried to find a way to show why light travel in the vacuum and in the voids too

As @PeterDonis explained, I meant Original Poster. OP can also mean Original Post, so you need to take the context into account.

OK, I just want to make sure that you do not require dust, atoms or any other form of matter to allow propagation of light in vacuum.

 

[PeterDonis]

I tried to find a way to show why light travel in the vacuum and in the voids too

I don't think there is any need to "find a way" for light to travel through vacuum or voids. Note that, as was pointed out in post #3 of this thread, the OP was mistaken in believing that we cannot see through the voids in our universe. We can, and that's common knowledge.