Saturday, July 11, 2020
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

New theory predicts universe existed forever


Posted on Wednesday, 11 February, 2015 | Comment icon 120 comments

The standard model of the universe based on the Big Bang. Image Credit: NASA
Scientists have put forward a new theory suggesting that the universe may have never had a beginning.
The current most widely accepted model of the universe's birth suggests that it came in to being some 13.8 billion years ago when everything in existence, which at that time occupied a single point of infinite density, began to expand at an exponential rate in an event that is commonly referred to as the Big Bang.

Now however scientists have put forward a radical new model in which they predict that the universe has no beginning or end at all and has instead existed for all of eternity.
The highly complex and confusing theory combines elements of both quantum mechanics and General Relativity to account for the universe's existence and even takes in to account dark matter and dark energy, two cosmological mysteries that current theories are unable to account for.

The new model also does away with the idea of singularities altogether, meaning that just as it eliminates the concept of the universe coming in to being from a single point, so too does it suggest that the universe could never collapse back down in a "big crunch" event either.

"The Big Bang singularity is the most serious problem of general relativity because the laws of physics appear to break down there," said study co-author Ahmed Farag Ali.

Source: Phys.org | Comments (120)


Tags: Universe, Big Bang


Recent comments on this story
Comment icon #111 Posted by Ellapennella on 16 February, 2015, 15:50
Tiggs I was reading over the comment you made last night to Leonardo this one : 'If the Universe did not start as a singularity, then, at an absolute minimum, the space to contain the non-singularity must have already existed.Thus, the expansion of the Universe being the creator of space is called heavily into question, due to the necessary pre-existence of space, prior.' I wanted to ask something in reference to it but I was unsure of how silly it may have sounded but it's an honest thought . Everything even stars are born -everything is born into the universe . So why isn't the universe born... [More]
Comment icon #112 Posted by sepulchrave on 17 February, 2015, 1:50
If the Universe did not start as a singularity, then, at an absolute minimum, the space to contain the non-singularity must have already existed. Thus, the expansion of the Universe being the creator of space is called heavily into question, due to the necessary pre-existence of space, prior. I am not sure what you are saying here (and I think Leonardo is correct)... aren't you assuming that space cannot be an internal degree of freedom for the Universe? If I have one ball, that suddenly splits into multiple smaller balls, I can then calculate the entropy of the system. But I can't calculate t... [More]
Comment icon #113 Posted by Tiggs on 17 February, 2015, 6:01
The expansion of the universe necessarily creates space - I would have thought that was obvious. No. It's entirely non-obvious. It's as non-obvious as a nuclear explosion creating space. That does not preclude the event which initiates that expansion happening in a pre-existing 'space' but, for the purpose of the point under debate that is irrelevant. And there was I thinking that's exactly what we're debating. If it is indeed 'universes' we are discussing, then the expansion of one universe - even if it apparently happens inside another universe's spacetime - creates a completely separate 'sp... [More]
Comment icon #114 Posted by Tiggs on 17 February, 2015, 6:23
Tiggs I was reading over the comment you made last night to Leonardo this one : 'If the Universe did not start as a singularity, then, at an absolute minimum, the space to contain the non-singularity must have already existed.Thus, the expansion of the Universe being the creator of space is called heavily into question, due to the necessary pre-existence of space, prior.' I wanted to ask something in reference to it but I was unsure of how silly it may have sounded but it's an honest thought . Everything even stars are born -everything is born into the universe . So why isn't the universe born... [More]
Comment icon #115 Posted by Tiggs on 17 February, 2015, 6:33
I am not sure what you are saying here (and I think Leonardo is correct)... aren't you assuming that space cannot be an internal degree of freedom for the Universe? What I'm assuming is that if space existed prior to the Big Bang, then it also existed after, and that both the internal and external space can be charted using the same coordinate system. If I have one ball, that suddenly splits into multiple smaller balls, I can then calculate the entropy of the system. But I can't calculate the entropy of a single particle - that doesn't make any sense. The ``space'' (in the mathematical sense) ... [More]
Comment icon #116 Posted by Leonardo on 17 February, 2015, 10:58
We don't know very much about anything, is the short answer. Both Leo and I are talking about our observable Universe being born out of a supermassive ball of matter. Where I believe we fundamentally differ is that I believe that space time existed prior to that birth, whereas I believe Leo's position* is more along the lines that our observable Universe creates it's own space time, as an aspect of it's being. *May or may not actually be Leo's position. Please ask Leo directly for details. For the record, my personal position is that the BB is not a "universe creation event" but an expansion o... [More]
Comment icon #117 Posted by Tiggs on 17 February, 2015, 18:47
For the record, my personal position is that the BB is not a "universe creation event" but an expansion of local spacetime within a larger domain. I also do not necessarily subscribe to the "supermassive ball of matter" hypothesis mooted by some as the 'origin' of all matter in our observable universe. However, that does not mitigate that any expansion of a local spacetime within a larger domain necessarily "creates space". The original argument was put that this 'created space' was a universe and the expansion of this could conceivably have consequences for other potential universes born from... [More]
Comment icon #118 Posted by sepulchrave on 18 February, 2015, 3:11
What I'm assuming is that if space existed prior to the Big Bang, then it also existed after, and that both the internal and external space can be charted using the same coordinate system. How can there be both internal and external space using the same coordinate system? Is this the gist of your argument: ``The Universe'' refers to all of the mass and energy in existence. ``Space'' refers to an underlying metric, not necessarily contained within the Universe (as defined above). ``Internal space'' refers to distortions or expansions to this underlying metric that are caused by, or at least rel... [More]
Comment icon #119 Posted by Tiggs on 18 February, 2015, 4:27
How can there be both internal and external space using the same coordinate system? The same way that the blast radius of a nuclear explosion can be shown on Google maps, as well as everywhere that the explosion isn't. Is this the gist of your argument: ``The Universe'' refers to all of the mass and energy in existence. ``Space'' refers to an underlying metric, not necessarily contained within the Universe (as defined above). ``Internal space'' refers to distortions or expansions to this underlying metric that are caused by, or at least related to, the distribution of mass/energy in the Univer... [More]
Comment icon #120 Posted by Ellapennella on 18 February, 2015, 5:08
We don't know very much about anything, is the short answer. epic cute !


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

6735352
280596
185463

 
'Vampire-slaying kit' goes up for auction
7-11-2020
A Gothic-looking box full of vampire-slaying paraphernalia is expected to fetch a hefty sum at auction.
NASA's next Mars rover is attached to rocket
7-10-2020
The Perseverance Mars rover has been attached to an Atlas V rocket in preparation for its epic journey.
Bizarre 'xenophyophores' found in the abyss
7-10-2020
Scientists have discovered a number of exotic new life forms in the deepest depths of the Pacific Ocean.
'10ft lake monster' caught on camera in China
7-9-2020
Footage showing an unidentified creature lurking in the water of a Chinese lake has appeared on social media.
Stories & Experiences
 
 
Grim reaper-like visitation
6-16-2020 | Canada
 
My monster catfish story
6-15-2020 | Dallas texas
 
Orb of light in room
5-9-2020 | USA/Texas/Waco
 
Not sleeping alone
5-9-2020 | Los Angeles
 
Glowing red eyes
5-9-2020 | Fields, Louisiana
 
Two creature sightings
5-1-2020 | Augusta and Louisana
 
 
My haunted home
5-1-2020 | Rainham, Essex, UK
 

         More stories | Send us your story
Featured Videos
Gallery icon 
NASA studies underwater 'white smoker' vents
Posted 4-17-2020 | 3 comments
Hydrothermal vents on the ocean floor can teach us about possible habitats on other worlds.
 
10 strange things about our solar system
Posted 3-17-2020 | 0 comments
A look at some of the most mysterious things about our solar system.
 
Lizzie - Scotland's other loch monster
Posted 3-8-2020 | 0 comments
Amelia Dimoldenberg investigates the Loch Ness Monster's neighbor.
 
Adam Savage and Spot
Posted 2-14-2020 | 4 comments
Adam Savage tests out Boston Dynamics' impressive Spot robot.
 
NASA 2020: Are you ready ?
Posted 1-1-2020 | 3 comments
A look at what's coming up in the world of spaceflight this year.
 
 View: More videos
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2020
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ