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2021-05-09, 09:45 AM (ISO 8601)
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- Apr 2009
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- Germany
If the expansion of the universe continues to speed up forever
Current data shows that the universe is expanding and that the rate of expansion is increasing.
As a consequence, even though the observable universe is getting bigger in volume, stuff is spreading out faster, so there is less and less stuff that we can see.
Currently, the gravitational pull of stars on the scale of galaxies and galaxy groups is strong enough to overcome the expansion of space and keep the galaxies together.
But could the rate of expansion become so fast that no two particles in the universe could interact with each other at the speed of light? Would that be a contender for the definition of "the end of the universe"?We are not standing on the shoulders of giants, but on very tall tower of other dwarves.
Spriggan's Den Heroic Fantasy Roleplaying
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2021-05-09, 10:53 AM (ISO 8601)
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- Aug 2011
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- Sharangar's Revenge
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Re: If the expansion of the universe continues to speed up forever
That is the currently-understood end of the universe, yes. Things just spread out and keep on spreading
until there are billions of light years between any to sub-atomic particlesforever.Warhammer 40,000 Campaign Skirmish Game: Warpstrike
My Spelljammer stuff (including an orbit tracker), 2E AD&D spreadsheet, and Vault of the Drow maps are available in my Dropbox. Feel free to use or not use it as you see fit!
Thri-Kreen Ranger/Psionicist by me, based off of Rich's A Monster for Every Season
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2021-05-09, 02:11 PM (ISO 8601)
- Join Date
- Mar 2020
Re: If the expansion of the universe continues to speed up forever
Accelerating expansion leading to end of the universe is called the Big Rip hypothesis. It's been around for a while. Current observations suggest it may not happen.
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2021-05-22, 11:17 PM (ISO 8601)
- Join Date
- Feb 2016
Re: If the expansion of the universe continues to speed up forever
The question that's always intrigued me is how this scenario would interact with color confinement. If color confinement is absolute, would a big rip result in a new big bang?
"If you want to understand biology don't think about vibrant throbbing gels and oozes, think about information technology" -Richard Dawkins
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Temple+ Modding Project for Atari's Temple of Elemental Evil
Morrus' RPG Forum (EN World v2)
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2021-05-23, 07:41 AM (ISO 8601)
- Join Date
- Dec 2008
Re: If the expansion of the universe continues to speed up forever
There is also the question of what is the universe part of, if anything.
If it's part of multiverse, with each universe being like it's own cell in a larger body, should a big rip occur, the matter within will not be destroyed, but either end up in a region between universes, and possibly sucked up into other universes.
There is also the possibility that once our universe gets to a certain point, it will hit other universes, and the impact of that will cause our universe (or at least part of it) to rebound back.
Essentially turning each universe into it's own game of pool, with each galaxy being one of billions of balls bouncing around, colliding with each other, as they bounce off the edge of the unverse, and recolide towards the middle, or eventually get sucked into the side pockets (black holes)
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2021-05-23, 09:49 AM (ISO 8601)
- Join Date
- Jun 2013
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- Bristol, UK
Re: If the expansion of the universe continues to speed up forever
The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.
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2021-05-23, 10:17 AM (ISO 8601)
- Join Date
- Dec 2008
Re: If the expansion of the universe continues to speed up forever
You realize, of course, how that could have been applied to several other 'theories' and views that were misproven?
Like....
"Anyone who thinks there a case for the world being flat just doesn't understand how big the Earth is. It's totally, ridiculously, huge"
"Anyone who thinks the Earth revolves around the sun just doesn't understand how the universe works"
etc.
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2021-05-23, 01:42 PM (ISO 8601)
- Join Date
- Jun 2013
- Location
- Bristol, UK
Re: If the expansion of the universe continues to speed up forever
The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.
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2021-05-24, 07:36 AM (ISO 8601)
- Join Date
- Aug 2011
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- Sharangar's Revenge
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Re: If the expansion of the universe continues to speed up forever
Warhammer 40,000 Campaign Skirmish Game: Warpstrike
My Spelljammer stuff (including an orbit tracker), 2E AD&D spreadsheet, and Vault of the Drow maps are available in my Dropbox. Feel free to use or not use it as you see fit!
Thri-Kreen Ranger/Psionicist by me, based off of Rich's A Monster for Every Season
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2021-05-24, 11:21 PM (ISO 8601)
- Join Date
- Jun 2013
- Location
- Bristol, UK
Re: If the expansion of the universe continues to speed up forever
It's not proof, but it's very, very suggestive.
Just look at this lot:
https://www.syfy.com/syfywire/a-moment-of-the-universe
That's not just a bit further than the shop on the street corner.The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.
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2021-05-24, 11:45 PM (ISO 8601)
- Join Date
- Aug 2020
Re: If the expansion of the universe continues to speed up forever
The image is beautiful, although as my wallpaper I have ultradeep field photo from Hubble so yeah the universe is so vast huge, but I don't see why this would mean that there is a little possibility for multiverse, if anything it proves that our reality doesn't adhere to any human concept of size, so there is no reason why there couldn't be anything even bigger.
Even if you argue that universe is infinite then this still doesn't preclude multiverse as we know that there are bigger and smaller infinites as well as there can be infinite bound between something finite (like there is infinite numbers between 0 and 1)"By Google's own reckoning, 60% of the ads that are charged for are never seen by any human being – literally the majority of the industry's product is a figment of feverish machine imaginations." Pluralistic
The bots are selling ads to bots which mostly bots are viewing, We really are living in XXI century.
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2021-05-25, 10:30 AM (ISO 8601)
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- Jun 2013
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- Bristol, UK
Re: If the expansion of the universe continues to speed up forever
The way it seems to me is that the hugeness of the universe precludes multiverses because there's no need for them, we can explore this universe for as long as we like, and we'll never get to the end of it.
The universe as it stands is undetermined whether it's massive enough that it constitutes a black hole or not, bring in another of a similar mass and a black hole would be almost inevitable, three or four and it's totally certain.The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.
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2021-05-26, 04:26 AM (ISO 8601)
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- Aug 2017
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- France
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Re: If the expansion of the universe continues to speed up forever
Forum Wisdom
Mage avatar by smutmulch & linklele.
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2021-05-26, 09:48 AM (ISO 8601)
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- Jun 2013
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- Bristol, UK
Re: If the expansion of the universe continues to speed up forever
Last edited by halfeye; 2021-05-26 at 09:49 AM.
The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.
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2021-05-26, 07:43 PM (ISO 8601)
- Join Date
- Aug 2011
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- Sharangar's Revenge
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Re: If the expansion of the universe continues to speed up forever
How closely have you looked at the laws of physics for this universe? Bits are elegant, but there are also bits that are a mess.
Warhammer 40,000 Campaign Skirmish Game: Warpstrike
My Spelljammer stuff (including an orbit tracker), 2E AD&D spreadsheet, and Vault of the Drow maps are available in my Dropbox. Feel free to use or not use it as you see fit!
Thri-Kreen Ranger/Psionicist by me, based off of Rich's A Monster for Every Season
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2021-05-26, 10:44 PM (ISO 8601)
- Join Date
- Feb 2016
Re: If the expansion of the universe continues to speed up forever
"If you want to understand biology don't think about vibrant throbbing gels and oozes, think about information technology" -Richard Dawkins
Omegaupdate Forum
WoTC Forums Archive + Indexing Projext
PostImage, a free and sensible alternative to Photobucket
Temple+ Modding Project for Atari's Temple of Elemental Evil
Morrus' RPG Forum (EN World v2)
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2021-05-27, 03:18 AM (ISO 8601)
- Join Date
- Aug 2020
Re: If the expansion of the universe continues to speed up forever
I'm not sure what is inelegant in multiverse.
Additionally multiverse helps to explain elegantly some constants in physics which doesn't seem to have any reason to have the value that are measured."By Google's own reckoning, 60% of the ads that are charged for are never seen by any human being – literally the majority of the industry's product is a figment of feverish machine imaginations." Pluralistic
The bots are selling ads to bots which mostly bots are viewing, We really are living in XXI century.
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2021-05-27, 02:03 PM (ISO 8601)
- Join Date
- Jul 2008
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- Sweden
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Re: If the expansion of the universe continues to speed up forever
There are many cases for multiverses, different kinds of multiverses.
- The many worlds interpretation of quantum field theory states that when a wave function collapses it splits the universe into multiple universes, one for each possible result
- Then there's eternal inflation, which is just inflation but without assuming it would have to end everywhere at the same time
- There's also the string theory one, but I dislike how popular string theory is, it's just not justified by the evidence
- There's also the "before big bang" one, where we try to answer "why is the universe so well suited for life" (it's not), and you merely replace a fine-turning assumption with the anthropic principle
- Also arguably any part of the universe that is behind some kind of event horizon is arguably in a separate universe since it is causally disconnected
Black text is for sarcasm, also sincerity. You'll just have to read between the lines and infer from context like an animal