<p>Since the Universe evolved from something like a singularity, where all of space was contracted to a point, yes, we are at the center of the Big Bang. So is every other point in the universe.</p>

<p>The CMB represents the light from a universe-filling plasma that lasted for roughly 378,000 years. It is a feature of the <em>observable</em> universe, rather than something that is actually there in the present universe; in particular, we can never reach it, as it's the same distance away from every point in the universe. As such, there's not much sense in talking about what's behind it, much like talking about what's behind a shadow.</p>

CC BY-SA 3.0
2017-06-20T00:32:04.100Z
Thanks for that. Could we all be entangled since the singularity?
Matthew Austin
CC BY-SA 3.0
2017-06-20T00:34:42.403Z
We can't even get systems of a thousand atoms to stay entangled for any length of time in the best lab conditions, let alone $10^{76}$ atoms! So the answer is no, because decoherence is a powerful thing.
probably_someone
CC BY-SA 3.0
2017-06-20T00:38:49.940Z
So, if the CMB is everywhere, lets forget about that for a moment but if you could look just past the furthest galaxy, could you see the big bang (thought experiment ignoring c)? and the fact that light wasn't bouncing around until CMB?
Matthew Austin
CC BY-SA 3.0
2017-06-20T00:39:39.960Z
Nope! Before the recombination event that released the CMB, the universe was effectively opaque.
probably_someone
CC BY-SA 3.0
2017-06-20T00:42:40.910Z
How do you think entanglement works? I heard the Chinese are transmitting successfully from satellites enabling unbreakable encryption the other day on radio 4
Matthew Austin
CC BY-SA 3.0
2017-06-20T01:01:27.783Z
If you're talking about QUESS, then that only deals with individual pairs of entangled photons. Two entangled particles are relatively easy to manage, but it gets exponentially harder as you increase the number.
probably_someone
CC BY-SA 3.0
2017-06-17T17:17:33.283Z
2017-06-17T17:17:33.283Z
probably_someone
<p>If it's true that the deeper we look into space the further back in time the light is coming from then does that mean that just behind the cosmic background radiation the entire sky is filled with an unviewable image of the singularity that was the big bang and can that mean that we are sat at the centre of the Big Bang?</p>

<cosmic-microwave-background>
Centre of the singularity that is the big bang
Matthew Austin
# Centre of the singularity that is the big bang

(Asked by: username_0 on 2017-06-17)

If it's true that the deeper we look into space the further back in time the light is coming from then does that mean that just behind the cosmic background radiation the entire sky is filled with an unviewable image of the singularity that was the big bang and can that mean that we are sat at the centre of the Big Bang?

**Tags:** cosmic-microwave-background

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## 1 answers

### Answer by username_1 on 2017-06-17. Score: 0 | Accepted answer

Since the Universe evolved from something like a singularity, where all of space was contracted to a point, yes, we are at the center of the Big Bang. So is every other point in the universe.

The CMB represents the light from a universe-filling plasma that lasted for roughly 378,000 years. It is a feature of the *observable* universe, rather than something that is actually there in the present universe; in particular, we can never reach it, as it's the same distance away from every point in the universe. As such, there's not much sense in talking about what's behind it, much like talking about what's behind a shadow.

> **Comments:**
> **username_0**: Thanks for that. Could we all be entangled since the singularity?  
> **username_1**: We can't even get systems of a thousand atoms to stay entangled for any length of time in the best lab conditions, let alone $10^{76}$ atoms! So the answer is no, because decoherence is a powerful thing.  
> **username_0**: So, if the CMB is everywhere, lets forget about that for a moment but if you could look just past the furthest galaxy, could you see the big bang (thought experiment ignoring c)? and the fact that light wasn't bouncing around until CMB?  
> **username_1**: Nope! Before the recombination event that released the CMB, the universe was effectively opaque.  
> **username_0**: How do you think entanglement works? I heard the Chinese are transmitting successfully from satellites enabling unbreakable encryption the other day on radio 4  
> **username_1**: If you're talking about QUESS, then that only deals with individual pairs of entangled photons. Two entangled particles are relatively easy to manage, but it gets exponentially harder as you increase the number.  

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