<p><a href="https://www.physicsforums.com/insights/big-bang-happen/" rel="nofollow noreferrer">The Big Bang happened everywhere</a>, so no, there is no &quot;space crater&quot;. The simplest way to get intuition on this is to imagine blowing up a balloon. Points on the balloon recede from each other, but there is no center. Quoting from link:</p>
<blockquote>
<p>Since realistic cosmological models are homogeneous, every point in space has the same properties as every other point, and therefore the models don’t have a center. <strong>We can visualize this using the metaphor in which galaxies are dots on a balloon being blown up. No point on the balloon is the center of expansion.</strong> If you want to pick out a center, you have to pick a point in the air, not on the surface of the balloon. But in the balloon analogy, the third dimension is just an aid to visualization. Only points on the balloon’s two-dimensional surface represent actual points in space.</p>
</blockquote>

CC BY-SA 4.0
2023-04-18T06:27:21.900Z
2023-04-18T06:27:21.900Z
Allure
<p>There is something I’ve wondered about ever since seeing a map that illustrates the distribution of matter within the universe: there doesn’t seem to be a blast site. Shouldn’t the big bang have created a “space crater” or some sort of void as everything sped away? The matter density map is somewhat uniform in that matter is everywhere.</p>

CC BY-SA 4.0
2023-04-18T03:17:00.553Z
The Big Bang didn't happen at a particular point in space; it happened all throughout space. For there to be a "blast crater", there would have had to have been space "outside" the Big Bang, which is impossible.
Jim421616
CC BY-SA 4.0
2023-04-18T06:37:31.263Z
Also https://astronomy.stackexchange.com/questions/669/what-is-in-the-center-of-the-universe?r=SearchResults&s=2%7C44.8702  and https://astronomy.stackexchange.com/questions/12749/oldest-in-the-universe?r=SearchResults&s=7%7C31.8300 and https://astronomy.stackexchange.com/questions/13106/when-i-read-that-a-system-is-located-x-light-years-away-why-is-there-no-directi?r=SearchResults&s=8%7C31.2316 And several more that you can find by searching for "big bang center"
James K
<matter>
Matter distribution
pwalker
# Matter distribution

(Asked by: username_0 on 2023-04-18)

There is something I’ve wondered about ever since seeing a map that illustrates the distribution of matter within the universe: there doesn’t seem to be a blast site. Shouldn’t the big bang have created a “space crater” or some sort of void as everything sped away? The matter density map is somewhat uniform in that matter is everywhere.

**Tags:** matter

> **Comments:**
> **username_1**: The Big Bang didn't happen at a particular point in space; it happened all throughout space. For there to be a "blast crater", there would have had to have been space "outside" the Big Bang, which is impossible.  
> **username_2**: Also https://astronomy.stackexchange.com/questions/669/what-is-in-the-center-of-the-universe?r=SearchResults&s=2%7C44.8702  and https://astronomy.stackexchange.com/questions/12749/oldest-in-the-universe?r=SearchResults&s=7%7C31.8300 and https://astronomy.stackexchange.com/questions/13106/when-i-read-that-a-system-is-located-x-light-years-away-why-is-there-no-directi?r=SearchResults&s=8%7C31.2316 And several more that you can find by searching for "big bang center"  

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## 1 answers

### Answer by username_3 on 2023-04-18. Score: 0

[The Big Bang happened everywhere](https://www.physicsforums.com/insights/big-bang-happen/), so no, there is no "space crater". The simplest way to get intuition on this is to imagine blowing up a balloon. Points on the balloon recede from each other, but there is no center. Quoting from link:

> Since realistic cosmological models are homogeneous, every point in space has the same properties as every other point, and therefore the models don’t have a center. **We can visualize this using the metaphor in which galaxies are dots on a balloon being blown up. No point on the balloon is the center of expansion.** If you want to pick out a center, you have to pick a point in the air, not on the surface of the balloon. But in the balloon analogy, the third dimension is just an aid to visualization. Only points on the balloon’s two-dimensional surface represent actual points in space.


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