The first few seconds of the Big Bang: What we know and what we don't

[editor]

Bit of a stand out intro:

Let's start with the general framework. 13.77 billion years ago, our universe was incredibly hot (a temperature of over a quadrillion degrees) and incredibly small (about the size of a peach).

The 1st few seconds of the Big Bang: What we know and what we don't

The infant universe was a busy place.

www.space.com

 

[Argonia]

A quadrillion degrees? Jesus

 

[DaveCinzano]

A quadrillion degrees? Jesus

"Honestly, no, I don't need any sun block, I'm fine - I've got a hat anyway"

 

[Pickman's model]

an african or a european peach?

 

[Orang Utan]

Let's start with the general framework. 13.77 billion years ago, our universe was incredibly hot (a temperature of over a quadrillion degrees) and incredibly small (about the size of a peach).

what happened before that though?

 

[Argonia]

Maybe it was just a peach forever and ever backwards in time

 

[beesonthewhatnow]

This is the area of physics that makes my head hurt. If there was nothing before the Big Bang, what created it? And into what did the new universe expand?

Anyone saying “God” can see me outside.

 

[Argonia]

God

 

[farmerbarleymow]

This is the area of physics that makes my head hurt. If there was nothing before the Big Bang, what created it? And into what did the new universe expand?

Anyone saying “God” can see me outside.

I like the theory about multiverses and branes colliding triggering big bangs. But for all we know our universe is a bubble in an alien's lava lamp.

 

[DaveCinzano]

I like the theory about multiverses and branes colliding triggering big bangs. But for all we know our universe is a bubble in an alien's lava lamp.

Fucken hippies

 

[souljacker]

This is the area of physics that makes my head hurt. If there was nothing before the Big Bang, what created it? And into what did the new universe expand?

Anyone saying “God” can see me outside.

Brahma. Either him or The flying spaghetti monster.

 

[Zapp Brannigan]

This is the area of physics that makes my head hurt. If there was nothing before the Big Bang, what created it? And into what did the new universe expand?

Anyone saying “God” can see me outside.

There wasn't a "before" the big bang, because time is a property of the universe created. There isn't an "outside" for the universe to expand into, because space is a property of the universe inside its finite expanding boundary.

 

[Zapp Brannigan]

Also God did it

 

[Orang Utan]

This is the area of physics that makes my head hurt. If there was nothing before the Big Bang, what created it? And into what did the new universe expand?

Anyone saying “God” can see me outside.

Better Ask Sas

 

[beesonthewhatnow]

There wasn't a "before" the big bang, because time is a property of the universe created. There isn't an "outside" for the universe to expand into, because space is a property of the universe inside its finite expanding boundary.

I know this is the answer.

But.

Time obviously did exist before. The bang happened. Well, what was there 1 second before it? Eh? EH?

 

[Zapp Brannigan]

I know this is the answer.

But.

Time obviously did exist before. The bang happened. Well, what was there 1 second before it? Eh? EH?

That was the exact second your haircut was fashionable

 

[beesonthewhatnow]

That was the exact second your haircut was fashionable

Yeah, I had to be first so you could copy it

 

[WouldBe]

I know this is the answer.

But.

Time obviously did exist before. The bang happened. Well, what was there 1 second before it? Eh? EH?

What happened to the 10 second countdown?

 

[Zapp Brannigan]

Yeah, I had to be first so you could copy it

I don't look like Johnny Bravo

 

[Kevbad the Bad]

a temperature of over a quadrillion degrees

Celsius or Fahrenheit?

 

[farmerbarleymow]

Here are some different theories.

Did a hyper-black hole spawn the Universe? - Nature

Big Bang was mirage from collapsing higher-dimensional star, theorists propose.

www.nature.com

Origin Of The Universe: 8 Different Theories - RankRed

No matter how convincing Big Bang Theory looks, it's not satisfactory to all. We've presented some of the most popular alternatives of the Big Bang, explaining the origin of the universe.

www.rankred.com

5 Controversial Theories of the Universe That Will Blow Your Mind - Learning Mind

Are there more controversial theories of the universe that provide a better understanding of how we got here? Let's see!

www.learning-mind.com

The hologram one in the third link makes as much sense as the others.

 

[ska invita]

Anyone saying “God” can see me outside.

... Outside the space time continuum

 

[DaveCinzano]

That was the exact second your haircut was fashionable

 

[stavros]

This is the area of physics that makes my head hurt. If there was nothing before the Big Bang, what created it? And into what did the new universe expand?

Anyone saying “God” can see me outside.

I think in Brief History Hawking posited, or at least quoted, the idea that the Big Bang was the end result of a Big Contraction of the previous Universe. I also think that theory's since been dismissed, but it's an interesting idea for the non-academic.

 

[kittyP]

Thinking about this stuff makes me really queasy and a bit scared.

 

[existentialist]

Thinking about this stuff makes me really queasy and a bit scared.

Don't look at some of the more recent speculations around supersymmetry and brane theory, then...

 

[Argonia]

Thinking about this stuff makes me really queasy and a bit scared.

My mum said that when I told her we were discussing it

 

[kittyP]

My mum said that when I told her we were discussing it

It annoys me because the subject is fascinating and I want to think/talk about it but it starts to instantly feel like I'm coming up on really strong acid or something and my brains going flip round

 

[Argonia]

I feel the same when I think about infinity.

https://www.urban75.net/forums/threads/different-kinds-of-infinity.373440/

 

[farmerbarleymow]

It annoys me because the subject is fascinating and I want to think/talk about it but it starts to instantly feel like I'm coming up on really strong acid or something and my brains going flip round

Clearly you need to take some strong acid and then think about it.