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So... Maybe the Universe WON'T expand forever?

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  • Author
1 minute ago, martin-w said:

Even type IV is getting a bit farfetched, maybe. 🤔

Yet, if you simply said "God" or "Gods", a lot of people would swallow it with quite a bit more ease......

"A spoon full of sugar makes the medicine go down"  Mary Poppins.

We are all connected..... To each other, biologically...... To the Earth, chemically...... To the rest of the Universe atomically.
 
Devons rig
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  • My utterly amateurish, don't know what I'm talking about, uneducated hypothesis is... Accepting that inflation is correct, and it does seem to be... the inflaton field prior to the hot big bang w

  • Yet, if you simply said "God" or "Gods", a lot of people would swallow it with quite a bit more ease...... "A spoon full of sugar makes the medicine go down"  Mary Poppins.

  • Dark matter is needed to explain why some stars at the outer parts of galaxies move at a different speed than what they should according to Newton. It is relevant at galactic length scales (about 100,

36 minutes ago, martin-w said:

Even type IV is getting a bit farfetched, maybe.

Kardashev and Carl Sagan thought so, too:

"Zoltan Galántai notes that neither Kardashev nor Sagan thought to extend the scale and define a Type IV (which would use the energy of an entire Universe). They simply did not envision a civilization capable of manipulating its environment on the largest possible scale (about 14 billion parsecs)."

Dugald Walker

  • Author

A possible future in which the universe expands forever..... 😢

 

We are all connected..... To each other, biologically...... To the Earth, chemically...... To the rest of the Universe atomically.
 
Devons rig
Intel Core i5 13600K @ 5.1GHz / G.SKILL Trident Z5 RGB Series Ram 64GB / GIGABYTE GeForce RTX 4070 Ti GAMING OC 12G Graphics Card / Sound Blaster Z / Meta Quest 2 VR Headset / Klipsch® Promedia 2.1 Computer Speakers / ASUS ROG SWIFT PG279Q ‑ 27" IPS LED Monitor ‑ QHD / 1x Samsung SSD 850 EVO 500GB / 2x Samsung SSD 860 EVO 1TB /  1x Samsung - 970 EVO Plus 2TB NVMe /  1x Samsung 980 NVMe 1TB / 2 other regular hd's with up to 10 terabyte capacity / Windows 11 Pro 64-bit / Gigabyte Z790 Aorus Elite AX Motherboard LGA 1700 DDR5

Ah yes, but the accelerating expansion of the universe  would stop and all the energy would be dumped into the field, particles created, jostle together, and a new hot big bang would occur. The end would be akin to the beginning, just a scalar field, just the inflaton field.😲

Nobel Prize now please. 

1 hour ago, martin-w said:

Nobel Prize now please. 

Careful, Martin. You don't wanna end up like Gabor Fekete, who claimed he should receive the Nobel Prize on many occasions 😉

https://perso.crans.org/lasseri/crackpot 

🙃

There are several guys of this calibre around. They send emails to anyone who is on a physics web page 😑

There's only one thing for it then. We must create our OWN Avsim science prize. What do you think?

Edited by martin-w

40 minutes ago, martin-w said:

There's only one thing for it then. We must create our OWN Avsim science prize. What do you think?

That can only be based on likes, of course. You beat me 🙂

  • Author
4 hours ago, martin-w said:

Ah yes, but the accelerating expansion of the universe  would stop and all the energy would be dumped into the field, particles created, jostle together, and a new hot big bang would occur. The end would be akin to the beginning, just a scalar field, just the inflaton field.😲

Nobel Prize now please. 

 

Be8Gdz.jpg

Edited by HiFlyer

We are all connected..... To each other, biologically...... To the Earth, chemically...... To the rest of the Universe atomically.
 
Devons rig
Intel Core i5 13600K @ 5.1GHz / G.SKILL Trident Z5 RGB Series Ram 64GB / GIGABYTE GeForce RTX 4070 Ti GAMING OC 12G Graphics Card / Sound Blaster Z / Meta Quest 2 VR Headset / Klipsch® Promedia 2.1 Computer Speakers / ASUS ROG SWIFT PG279Q ‑ 27" IPS LED Monitor ‑ QHD / 1x Samsung SSD 850 EVO 500GB / 2x Samsung SSD 860 EVO 1TB /  1x Samsung - 970 EVO Plus 2TB NVMe /  1x Samsung 980 NVMe 1TB / 2 other regular hd's with up to 10 terabyte capacity / Windows 11 Pro 64-bit / Gigabyte Z790 Aorus Elite AX Motherboard LGA 1700 DDR5
1 hour ago, martin-w said:

We must create our OWN Avsim science prize.

Amen to that ... 🙂 ... even just a little more science would go a long way ... the perception of how things works by the "Internet community" is darn right scary, clear failure of our education system.

I believe this site supports polls?  Do a science poll, start simple so you can understand the audience here ... like maybe:

Is the Earth?

1.  Flat

2.  Round (ish)

Good warmup question so we know what we're dealing with. 🙂 

 

3 hours ago, martin-w said:

We must create our OWN Avsim science prize.

I was going to suggest it be called the Avbel Prize. By sharing a syllable with the Nobel Prize, it would acquire similar stature. Unfortunately, the name has already been taken.

Dugald Walker

The universe is a Yo-Yo expanding in all directions until its energy runs out, then it retracts to its origin once again creating the next 'Big Bang', and the cycle continues

Matthew Kane

I'm Dyslexic, what's an error to you is not to me 

18 hours ago, Matthew Kane said:

The universe is a Yo-Yo expanding in all directions until its energy runs out, then it retracts to its origin once again creating the next 'Big Bang', and the cycle continues

 

If its infinite though, there is no retraction, no change in size, only variable density and temperature.

According to Penrose, the universe doesn't know the difference between the beginning and the end, the end is the same as the beginning. CCC. No clocks. 

 

4 hours ago, martin-w said:

 

If its infinite though, there is no retraction, no change in size, only variable density and temperature.

According to Penrose, the universe doesn't know the difference between the beginning and the end, the end is the same as the beginning. CCC. No clocks. 

 

The infinity would suggest our big bang may not be the only one, we could be one of many, and the possibility for an event when one or more universe collide during expansion and overlap

I don't fully buy into Yo-Yo theory I just like the idea that it closes up on itself and the energy from that means it starts again

Edited by Matthew Kane

Matthew Kane

I'm Dyslexic, what's an error to you is not to me 

13 hours ago, Matthew Kane said:

The infinity would suggest our big bang may not be the only one, we could be one of many, and the possibility for an event when one or more universe collide during expansion and overlap

I don't fully buy into Yo-Yo theory I just like the idea that it closes up on itself and the energy from that means it starts again

 

Check out Penrose's theory. As I mentioned above, I find the fact that, if inflation is correct, that the universe began with an inflation field (inflaton field) and in the distant future will ultimately become the same type of scalar field. And if it stops expanding, same scenario may be manifest as per the big bang. 

Edited by martin-w

Are we talking Dark Matter vs. Dark Energy ... Dark Matter pulls and Dark Energy pushes ... hence the desire to see how much Dark Matter exists and what if they're exactly equal ... is that even possible with the conservation of energy?  Or maybe Dark Energy IS the conservation of energy?

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