Dark matter

There’s plenty of evidence for dark matter, ranging from velocity dispersion, flat galactic rotation curves, and gravitational lensing. The evidence for dark matter is so good we can even map it out:

Image credit NASA, ESA and R. Massey (California Institute of Technology), see spacetelescope.org

There’s also plenty of papers and articles about dark matter candidates. Maxim Khlopov refers to WIMPs, axions, neutrinos, mirror-world particles, extra-dimensional particles, and black holes. Andreas Ringwald refers to neutralinos, gravitinos, sterile neutrinos, and axions. Kim Griest refers to MACHOs, molecular hydrogen, MOND, axions, WIMPs, and neutrinos. And to something else. To “the ‘none-of-the-above’ possibility which has surprised the Physics/Astronomy community several times in the past”. However why that should be a surprise is something of a mystery to me.

One of our candidates is missing

That’s because one of our candidates is missing, and it’s right there in the foundation of the general theory of relativity. That’s where in 1916 Einstein said “the energy of the gravitational field shall act gravitatively in the same way as any other kind of energy”. Gravitational field energy causes gravity, and it isn’t made up of WIMPs, or axions, or sterile neutrinos. It’s none of the above. Whilst some might claim this field energy could be quantized as some kind of particle, that’s the wrong approach. That’s not how gravity works. There are no actual photons flying back and forth between the proton and the electron in the hydrogen atom. The virtual photons of QED are virtual, as in not real. They aren’t the same thing as vacuum fluctuations, they only exist in the mathematics of the model. Photons are real electromagnetic waves, but hydrogen atoms don’t twinkle, and magnets don’t shine. In similar vein you might say gravitons are real gravitational waves, but there are no virtual gravitons flying around in the room you’re in. Instead there’s gravitational field energy in the room you’re in.

Field energy is spatial energy

In his 1929 essay on the history of field theory, Einstein described a field as a state of space. He was talking about gravitational fields and electromagnetic fields, and he said this: “it can, however, scarcely be imagined that empty space has conditions or states of two essentially different kinds”. The crucial point to appreciate is that a field isn’t something that exists in space, it’s a state of space. As to what sort of state, Einstein talked about that in his 1920 Leyden Address. That’s where he referred to a gravitational field as a place where space was “neither homogeneous nor isotropic”. He finished up saying this: “recapitulating, we may say that according to the general theory of relativity space is endowed with physical qualities; in this sense, therefore, there exists an ether”. See the Wikipedia aether theories article and note the quote by Robert B Laughlin: “it is ironic that Einstein’s most creative work, the general theory of relativity, should boil down to conceptualizing space as a medium when his original premise [in special relativity] was that no such medium existed”. Laughlin also said the empty vacuum of space is more like a piece of window glass than ideal Newtonian emptiness. He finished up saying “the modern concept of the vacuum of space, confirmed every day by experiment, is a relativistic ether. But we do not call it this because it is taboo”. Einstein is supposed to have done away with the ether or aether, but in the end, he didn’t. He thought of space as a something rather than a nothing. Something elastic.

Space is modelled as an elastic solid

This is why general relativity is related to continuum mechanics. And why if you google on Einstein elastic space, you can find articles such as evicting Einstein. It was written in 2004 by NASA’s Patrick Barry and Tony Phillips. It says this: “relativity explains gravity and motion by uniting space and time into a 4-dimensional, dynamic, elastic fabric of reality called space-time, which is bent and warped by the energy it contains”. This is why we have the stress-energy-momentum tensor, which “describes the density and flux of energy and momentum in spacetime”:

Public domain image by Maschen, based on an image by Bamse see Wikipedia

Note the shear stress term on the right. That tells you space is modelled as some kind of elastic solid. Also note the energy-pressure diagonal. Space is modelled as an elastic solid that’s subject to pressure. For an analogy, imagine you have a large block of gin-clear elastic jelly, with grid lines in it so you can see what’s going on. You slide a hypodermic needle into the centre of the block, and inject more jelly. This represents a concentration of energy bound up as the matter of a massive star. It creates a pressure gradient in the surrounding jelly. Stress is directional pressure, the pressure is outwards, and Einstein’s equation Gμν = 8πTμν is modelling the way gin-clear elastic space is conditioned by the energy you added. But note that you added jelly to represent energy, and that the jelly is also representing space. Space doesn’t just have some kind of innate intrinsic vacuum energy. At some deep fundamental level, energy and space are the same thing. A solid thing.

Spatial energy is vacuum energy

But this thing is not a solid like silicone rubber is a solid. Space is a continuum, it isn’t made of matter particles, or dark matter particles. We say matter is made of energy, but we don’t say energy is made of matter. Particularly spatial energy, which is vacuum energy, because that’s what’s left when you’ve taken the matter away. It is what it is, it isn’t made of something else. Au contraire, as far as I can tell it’s fundamental: everything else is made of it. For example a gravitational field is a place where space is inhomogeneous. A wave is a dynamical non-uniformity. A photon is a transverse wave propagating linearly at c. An electron is where a 511keV photon is going around and around in the guise of a spin ½ standing wave. Standing wave, standing field. But even if the electron isn’t there, or the photon, or the gravitational field, the vacuum energy is. There’s no discernible gravitational field in a gedanken void at the centre of a planet. That’s where space is homogeneous and there’s no gradient in gravitational potential. But it’s also a place where gravitational potential is low because the vacuum energy density is high.

Inhomogeneous vacuum

As for how high, we don’t know. But we do know that the energy density is higher in a black hole where gravitational time dilation is infinite. The energy density is lower in free space well away from the black hole. In between there’s a density gradient. It’s similar for the room you’re in, which is why your pencil falls down. And where the Moon is, which is why the Moon orbits the Earth. And where the Earth is, which is why the Earth orbits the Sun. And where the Sun is, which is why the Sun orbits the centre of the galaxy. But unfortunately the FLRW metric “starts with the assumption of homogeneity and isotropy of space”. This is not a good assumption. Not when Einstein said a gravitational field is a place where space is “neither homogeneous nor isotropic”. Not when modern authors say the same thing and write papers like inhomogeneous vacuum: an alternative interpretation of curved spacetime. Or papers like inhomogeneous and interacting vacuum energy.

The contrast between aether and matter would fade away

Especially since Einstein said if we could understand the gravitational and electromagnetic fields “as one unified conformation”, the contrast between ether and matter would fade away. He was saying the contrast between space and matter would fade away. So the contrast between space and dark matter should fade away too. See does matter differ from vacuum? by Christoph Schiller. The answer is no. Because this space, this quintessence, doesn’t just have energy, it is energy, and matter is made of energy. So it’s perhaps rather prescient that “medieval scholastic philosophers granted aether changes of density, in which the bodies of the planets were considered to be more dense than the medium which filled the rest of the universe”. It would seem that Newton granted that too:

Fair use excerpt from Newton’s views on aether and gravitation by Léon Rosenfeld 1969

When it’s inhomogeneous, space has a mass equivalence and a gravitational effect. But it doesn’t interact with photons in the usual sense. It’s gin clear. It’s invisible to the entire electromagnetic spectrum. It doesn’t change a photon’s E=hf energy, because energy is conserved. Space merely bends a photon’s path when space is inhomogeneous. When it isn’t, like in the void at the centre of the planet, you wouldn’t know it was there. Because light goes straight and pencils don’t fall down. It’s similar for electrons and protons. Space only affects them gravitationally when it’s inhomogeneous. It’s also dark, and it’s cold because it doesn’t consist of fast-moving particles, so it fits the bill in every way you can think of. Particularly when you think of black holes and the early universe. Because as Stephen Hawking said, the universe is like a black hole in reverse. We’ll come back to that another day.

The raisin loaf analogy

So, we have our vacuum energy. When it’s inhomogeneous it has a gravitational effect. Meanwhile the contrast between space and matter is fading away, and space is dark. It sounds promising. But there’s something else we need, starting with a raisin loaf:

Image by NASA, see Universe 101 by Britt Griswold and Edward Wollack

The raisin-loaf analogy likens the expanding universe to a loaf in an oven. The loaf rises and expands. It gets bigger, but the raisins don’t. They represent the galaxies, and the thing to remember is space expands between the galaxies but not within. That’s because each galaxy is gravitationally bound. Something else we need to accompany the raisin loaf is conservation of energy. Do you know of any situation in which energy is not conserved? I don’t. I don’t know of any over-unity free-energy perpetual motion machines. So when space expands, conservation of energy tells me the spatial energy density must reduce. Not stay constant.

Space expands between the galaxies but not within

This is important because there’s more than one way to skin Schrödinger’s cat. To recap, Einstein modelled space as a continuum, akin to some kind of gin-clear ghostly elastic jelly. Let’s make that a dark jelly, with white grid lines. When you inject more jelly in the middle you create a pressure gradient in the surrounding jelly. Curved spacetime is essentially a plot of this pressure gradient. It isn’t the curvature of the grid lines. Like John Baez said, curved spacetime is not curved space. Space isn’t curved where a gravitational field is. Instead, like Einstein said, it’s inhomogeneous. Then when the inhomogeneity is non-linear such that a plot of it is curved, the result is what we call curved spacetime. So, is there another way to make space inhomogeneous? What happens when space expands between the galaxies but not within? Let’s start with two galaxies close together. Let’s take a look at some grid lines, but let’s also take a slice through the middle to avoid getting confused by the curvature of the galaxies. Then we can depict each galaxy’s gravitational field as inhomogeneous space, like so:

Galaxy images by NASA

When space expands between the galaxies but not within, the energy density of space between the galaxies reduces by virtue of conservation of energy. So the inhomogeneity increases. Like so:

Galaxy images by NASA

And what’s a gravitational field? Like Einstein said it’s a place where space is “neither homogeneous nor isotropic”. So when the universe expands, when space expands between the galaxies but not within, those galaxies end up with deeper gravitational potentials. You can liken it to an upside-down rubber sheet analogy. A gravitational field is normally shown as a bowling-ball depression, but turn it over so it’s a mountainous hump in a plain. Injecting that gin-clear ghostly elastic jelly makes the mountain bigger. But expanding the universe is like lowering the whole plain. The mountain gets bigger in a roundabout way. So do the gravitational fields of our galaxies. Each and every galaxy, unless it’s bright and shiny and new, is of necessity surrounded by a region of inhomogeneous space. Caused by the non-uniform expansion of space. And inhomogeneous space is what a gravitational field is. So each and every galaxy has rather more gravity than you might expect.

Age matters

The situation is similar for clusters of galaxies. The space within the galaxies doesn’t expand, and nor does the space between the galaxies of the cluster. So the galaxies end up embedded in a region of denser space, surrounded by a density gradient. A place where space is neither homogeneous nor isotropic. A gravitational field. In our upside-down rubber sheet analogy, the cluster is a massif. Expanding the universe is like lowering the surrounding plain so the massif gets more massive:

Dark matter map by Priyamvada Natarajan et al, see mapping substructure in the HST Frontier Fields figure 28

See the NASA article galaxy clusters reveal new dark matter insights. It dates from 2016, and concerns a study of 8,648 galactic clusters by Hironao Miyatake and 6 other authors. The article says the internal structure of a cluster is linked to the dark matter environment it’s in. It quotes co-author David Spergel saying this: “our work has shown that ‘age matters’: Younger clusters live in different large-scale dark-matter environments than older clusters”. Yes, age matters. Because an old cluster is going to look like its embedded in more dark matter than a young cluster. Because the surrounding space has expanded more. Hence you can read articles such as dark matter less influential in galaxies in early universe on PhysOrg dating from March 2017. It concerns a paper by Reinhard Genzel and 31 other authors on strongly baryon-dominated disk galaxies at the peak of galaxy formation ten billion years ago. What they found was intriguing: “unlike spiral galaxies in the modern Universe, the outer regions of these distant galaxies seem to be rotating more slowly than regions closer to the core – suggesting there is less dark matter present than expected”. There’s an accompanying illustration which also appears in the Scientific American reportage. I’ve flipped it horizontally to make fit better with the excellent animation by Ingo Berg in the Wikipedia galaxy rotation curve article:

CCA 4.0 image by ESO/L Calçada see ESO public images                                            CCASA image by Ingo Berg, see Wikipedia

The early spiral galaxies have “normal” rotation curves wherein velocity diminishes with distance, like you’d expect if there was no dark matter. The contemporary spiral galaxies have flat rotation curves. Something has clearly changed whilst space has been expanding. What can it be? Why I rather think it might be something called space.

A problem for structure formation

Take a look at the citations for the 2017 paper by Genzel et al. There’s corroboration in falling outer rotation curves of star-forming galaxies at 0.6 < z < 2.6 probed with KMOS3D and SINS/ZC-SINF. It’s by Philipp Lang and 27 other authors. They said “this outer fall-off strikingly deviates from the flat or mildly rising rotation curves of local spiral galaxies of similar masses”. That doesn’t sit well with dark matter’s supposed role in structure formation, where it’s said to form the “seeds into which the baryons could later fall”. Mark Swinbank is diplomatic in his 2017 Nature letter distant galaxies lack dark matter. He said “surprisingly, galaxies in the distant Universe seem to contain comparatively little of it”. Alexander Dolgov said new data strongly supports an inverted picture. Mordehai Milgrom wrote about high-redshift rotation curves and MOND in 2017, saying a0 may be varying with cosmological time. Andy Biddulph really spits it out in observational support for bottom up quantum gravity. He said it’s “contrary to the standard model of galaxy formation which supposes a dark matter halo about which baryons condense”. Quite. Which is why Genzel said it’s going to be an interesting time.

Old galaxies and clusters contain more dark matter than youngsters

That’s because older galaxies definitely appear to contain more dark matter than younger galaxies. The paper by Lang et al says star-forming galaxies at larger look-back times are more baryon-dominated, with the baryon fraction increasing with redshift. They refer to Förster Schreiber et al 2009, van Dokkum et al 2015, Burkert et al 2016, Wuyts et al 2016, Price et al 2016, and Stott et al 2016. Also see the 2009 NASA report Hubble provides new evidence for dark matter around small galaxies. That’s where Christopher Conselice said this: “these dwarfs are very old galaxies that have been in the cluster a long time. So if something was going to disrupt them, it would have happened by now. They must be very, very dark-matter-dominated galaxies”. The underlying paper is Hubble Space Telescope survey of the Perseus Cluster – I. The structure and dark matter content of cluster dwarf spheroidals by Samantha Penny, Christopher Conselice, Sven de Rijcke, and Enrico Held.

The Bullet cluster

Talking of clusters, the Bullet cluster is said to provide the best evidence to date for the existence of dark matter”. You can find composite images such as the one on the Chandra X-ray observatory website, in the 2006 article NASA finds direct proof of dark matter:

Credit: X-ray: NASA/CXC/CfA/M Markevitch et al; Optical: NASA/STScI; Magellan/U Arizona/D Clowe et al; Lensing Map: NASA/STScI; ESO WFI; Magellan/U Arizona/D Clowe et al.

The picture is composed of an optical image showing orange and white galaxies, an X-ray image showing hot gas in pink, and a blue overlay of dark matter inferred from lensing observations. Most of the baryonic matter is in the form of gas rather than stars. This gas was slowed and heated to 160 million degrees in a 6 million mph collision. It was left behind, whilst the dark matter wasn’t. Hence the lensing is strongest in two separated regions near the visible galaxies. See the animation on the Chandra photo album. Strictly speaking the Bullet cluster is the one with the bow shock trailing behind it, but people tend to refer to both clusters as the Bullet cluster without thinking too much about it. It’s similar for MACS J0025.4-1222 which “provides independent, direct evidence for dark matter and supports the view that dark matter particles interact with each other only very weakly”. People presume dark matter consists of particles without thinking too much about it.

Abell 520

They don’t think too much about Abell 520 either. See the 2012 Chandra article dark matter core defies explanation in NASA Hubble image. The associated press image and caption says “the result could present a challenge to basic theories of dark matter, which predict that galaxies should be anchored to dark matter”. Again the galaxies are orange and white, the pink is hot gas which is evidence that a collision has occurred, and the dark matter is shown in blue:

Credit: X-ray: NASA/CXC/UVic/A Mahdavi et al; Optical/Lensing: CFHT/UVic/A Mahdavi et al, see the Chandra photo album

Like the Bullet cluster there’s a bow shock, but pointing 45° down to the right rather than straight left to right. However unlike the Bullet cluster there’s dark matter in the middle, and apparently no dark matter around a group of bright galaxies on the left. See the Canada-France-Hawaii telescope website for a good write up in their article dark matter core defies explanation. It says this: “the team has proposed a half-dozen explanations for the findings, but each is unsettling for astronomers. “It’s pick your poison,” said team member Andisheh Mahdavi”. The article refers to a study of the dark core in A520 with Hubble space telescope: the mystery deepens. It’s by Myungkook James Jee, Andisheh Mahdavi, Henk Hoekstra, Arif Babul, Julianne Dalcanton, Patricia Carroll, and Peter Capak. They offer a variety of possible causes, namely a compact high mass to light group, a contribution from neighbouring substructures, a distant background cluster, the ejection of bright galaxies, the collisional deposition of dark matter, and a line-of-sight filament. In a later paper in 2014 the first four authors favour collisional dark matter. What they don’t offer is a none of the above possibility. The possibility that dark matter is as smooth as hell. That it’s more smoothly distributed throughout space than previously thought. So much so, that it doesn’t consist of particles.

Filaments of the large scale structure

I think we’ll get there in the end. But meanwhile take note of the 2008 paper Cluster Abell 520: a perspective based on member galaxies. A cluster forming at the crossing of three filaments? It’s by Marisa Girardi, Rafael Barrena, Walter Boschin, and Erica Ellingson. Their results suggest that “we are looking at a cluster forming at the crossing of three filaments of the large scale structure”. Also note that the observable universe is comprised of “galaxy groups, galaxy clusters, superclusters, sheets, walls and filaments, which are separated by immense voids, creating a vast foam-like structure”. This structure isn’t just made of galaxies, just as a raisin loaf isn’t just made of raisins. The raisins are only a small fraction of the whole. Take away the raisins, and you still have a loaf. A foam-like inhomogeneous structure that’s a something rather than nothing. In similar vein there are no galaxies in the centre of Abell 520. But there are lensing centres. Because space itself is not homogeneous, and nor is its expansion.

Space is dark and there’s a lot of it about

I suppose this non-uniform expansion of non-uniform space means gravity is “modified”. Which in a way means Milgrom was always half right. The same goes for the people who talk about dark matter in non-specific terms. But not for the particle physicists. They’ll never find those supersymmetric WIMPs. They’re out on a limb because they don’t understand the nature of the electron or why there are no magnetic monopoles, or how gravity works. They can’t see what’s hiding in plain view because they haven’t listened to what Einstein said. Their general relativity is an ersatz secondhand general relativity that doesn’t even acknowledge that light curves because the speed of light is not constant. Or that Einstein said space is neither homogeneous nor isotropic, that it’s the aether of general relativity, and that the contrast between space and matter would fade away. What’s a quantum field? A state of space. How many states of space are there in any one place? There can only be one. What’s the state for a gravitational field? Inhomogeneous. So after forty years of no-show exotic particles, what’s left? What’s the none of the above possibility? Inhomogeneous space. That’s what dark matter is. Inhomogeneous space with its inhomogeneous spatial energy which has a gravitational effect. Because space is dark, it has its vacuum energy which has a mass equivalence, and there’s a lot of it about.


This Post Has 9 Comments

  1. Andy Hall

    I have not really managed to dig into the aether debate to the extent of understanding why the opinion appeared to win out that vacuum was nothing. It could be the conclusion of the Michelson-Morley experiment failing to detect aether. It could be the theory of special relativity replacing the role of aether with the space-time continuum. What I generally pick up on is that the “redundancy” of aether after relativity seems to have consigned the concept to being a fringe or even crank idea. The thrust of the current article on Dark Matter is that we should consider aether, I would define it as space energy density, as real, and I support that viewpoint. It works for me as an intuitive way conceptualize a medium through which electromagnetic waves propagate. A medium in which observable effects, such as light waves in the form of photons can be observed. A medium in which more dense energy structures such as electrons and photons can be formed and observed just as one observes whirlpools in water as vortices. The same structures occur in air, which we can only sometimes see. The same sorts of vortex structures also occur observable as lightning tornadoes at tiny scales. I have a booked by R.A. Ford called “Home made lighting”. that provides photographs of the millimeter scale lightning tornadoes. The question then becomes, why does aether remains a a taboo concept?

    What I will say additionally, is that the inherent intellectual appeal of the idea of an aether is supported by the maths I have done. As alluded to previously, my work supports the position of aether having properties and being directly related to energy. It appears that space at the nano-scale (atomic) and universal scale can be described with geometric relationships that relate directly back to fundamental constants. I will publish an article shortly that explains how a newly defined constant “a”, defined as a=c^4*h relates the values of photonic energy and maxwell’s electromagnetic properties of free space and thus directly relates energy and mass, unifying the concepts of photon energy and mass with an underlying mechanism. Hence the properties of aether are directly related to electrons, electrons can be related in combination to the mass in protons. Rearraging this relationship as c=(a/h)^(1/4) gives you the speed of light defined in terms of h and “a”. “a” appears to be a maximum energy density values and relates to the maximum energy you can fit into a geometrically defined space.

    Until I have written more I can only provide you with the teaser that h, Plancks constant can be defined as h = a/(Z0^4*eps0^4). You should check the numerical values. Eps0 is the permittivity of free space and Z0 is the impedance of free space. Plancks constant up until now has remained an empirical constant found from experiment and the value of Plancks constant has not been understood in terms of other constants. In stating that there is an underlying geometrical relationship between energy as light, I am treading a path that has remained an apsiration for science for a long time.

    I get the impression from reading your blog that you are not in favour of mysteries for the sake of mysteries. I prefer answers to “unanswerable mysteries”, that people not withstanding like to ask for grant money to study. It seems that the pursuit of unanswerable mysteries is good grant fodder for keeping researchers in business. There is a prospect that a lot of those mysteries will be cleared up and found to exist only because of incorrect assumptions in the theory that has previously been applied. Hence, infinity and zero need to be put in their proper place. The physical interpretation of these values needs to be correctly defined.

    Intuitively a cube of volume 1/c^3, rotating for a unit time of length 1/c gives units of energy of 1/c^4 and therefore an energy density for a frequency of 1 Hz of h/(1/c^4) = h*c^4 = a. However, these subjects require a more extensive treatment and a single comment on a website is not the place to explore them fully.

    I still think you are doing an outstanding job with these blogs. I think with this one you have really excelled with the clarity of the analysis and making the argument for the energy of space as the answer to the mystery of dark matter.

    The only point I take issue with specifically is the discussion around expansion. I don’t agree with the idea of expansion. Therefore, it is not your proposition that I have an issue with but the current generally held opinion that space is expanding. Once you have accepted the idea of energy in space with an inhomogenous distribution causing the observation of gravity in the vicinity of large masses, i.e. collections of high energy density spaces (atoms), it is less of a stretch to imagine that only the very large scale there is a variation in the energy density that space can support. If you take the analogy of ocean waves speeding up as they get into shallower water and conversely slowing down as the water gets deeper then light waves would be seen to blue shift with increasing distance / time on a very large scale in the universe. What I am proposing is that the observable universe is an entity in its own right and that the energy density at the edges is a shallower because the rotational velocity at the far distant edges is at its highest. Hence, we don’t live in an expanding universe we live in a rotating one. Everything in our universe is rotating its is only the speed that changes.

    Now, if we are in a universe of definite extent, that is rotating and with energy distribution defined by constants, you might expect that the total energy of that universe is a definable constant. The size / age of the observable universe would be a constant and the Hubble Constant could indicate the increase in energy density from the edge towards the centre of rotation of the observable universe. I have provided an overview of the maths for a calculation of the age of universe in terms of constants on my web page http://www.abstractinventions.uk/page13.php?id=13. If you substitute for “a” above into that formula the age of the universe in seconds simplifies to Tu = a*c^2/1.03^(10/3). I proposed another new constant H1 that is the age of the universe multiplied by the Hubble constant. That shows that a constant related to geometry can be defined at the scale of the universe and allows the hubble constant measured for the distant universe to be defined. I understand this is all postdiction and number fitting but it creates a mathematical model founded on geometrical principles. The web page defining H1 and hence H0 is here http://www.abstractinventions.uk/page15.php?.

  2. Andy Hall

    Typical, there is an important typo in the last post. h = a*Z0^4*eps0^4 (Z0=376.730312, eps0=8.85418e-12, a=c^4*h = 5.35228) gives a good approximation or a definition of h = 6.626046e-34. I could have recast the formula in terms of mew0, the magnetic constant as h = a*mew0^4/Z0^4 where mew0=4*pi*1e-7. In either case a clear numerical connection between h and electromagnetic constants of vacuum is indicated, implying vacuum energy is linked to mass because Planck’s constant has units including mass.

  3. John Duffield

    I don’t know why aether is somehow taboo, Andy. Nor does Nobel prizewinner Robert B Laughlin, see this: https://en.wikipedia.org/wiki/Aether_theories#Quantum_vacuum. It’s one of those things that contributes to the mess that is contemporary physics.
    Your maths sounds interesting. Especially since I think of space and energy as being the same thing. And because I like electromagnetic geometry. It shouldn’t be some big surprise because we have TQFT, not that it gets much of a mention. Nor does Andrew Worsley’s stuff on powers of c. Stuff like this: λ = 4πn / c^1½. The 4π is there because we’re dealing with a sphere, and the n has the right dimensionality and a value of 1. (I think you should look at spheres rather than cubes). Yes, the properties of space are directly related to electrons because h is what it is. And h is what it is because it’s something like an elastic limit, permittivity being an inverse shear modulus and permeability being a density. An energy density that is in effect a spatial density.
    No, I’m not in favour of mysteries. There’s too many physicists who peddle mystery because mystery sells. They use it to promote physics and say things like “Nobody knows! Woo!” What they don’t want is somebody saying somebody does know. They don’t want the mystery solved. They aren’t behaving like scientists. The situation is like this: if you pay a bunch of people a handsome salary to search for the Holy Grail, you will guarantee that they will never find it. Because if they do, that’s the end of the handsome salary.
    Thanks re this blog. I realised a while back that I’d accumulated considerable knowledge and ought to get it down, and get it “out there”. I run a forum, see https://physicsdiscussionforum.org/ but I thought I’d do a blog-style thing instead. I don’t know why we haven’t been reading about dark matter as spatial energy. I wouldn’t be surprised if there’s dozens of papers that have been saying it for decades, but we didn’t get to hear about them because too many people have been peddling WIMPs for way too long.
    As for expansion, we’ll have to agree to differ on that. Because space has this “elastic” nature, and IMHO it’s like it’s compressed elastic. Squeeze a stress ball down in your fist, then let go. Do you know what a rotating universe would be? One big magnetic field. As for the age of the universe, I don’t think it’s 13.8 billion years. Note that the speed of light varies in a gravitational field, and that in a black hole, it’s zero. So in the early universe, the very early universe, what was c? I think it was zero. Let’s talk more about this after the coming articles.

  4. Andy Hall

    Hi John, just to follow up on my comments above I have posted the following initial page that presents what I wrote above in a tidier form and gives an indication of the extent of where my work has taken me. http://www.abstractinventions.uk/page30.php?id=3
    Unless any good reason turns up along the way, I will post the rest of my current initiative linked to the latter page and you can let me know what you think. It is all a work in progress so it will likely appear drip fed.

  5. joao carlos holland barcellos

    The secret of dark matter finally revealed.

  6. Akis

    Hi Alan,

    Wow, great input, very very interesting stuff this paper! 🙂 thank you very much for sharing!

    From the paper:

    If we adopt the “Decreasing Universe” where the gravitational field shrinks the space in which it crosses, we find that the accelerated separation of galaxies, often explained by the so-called “Dark Energy” is a kind of “illusion” resulting from this space contraction and, therefore, unnecessary. The “Dark Matter”, on the other hand, can also be explained by the same effect of the gravitational contraction of our space, since the radius of the galaxies is observed as greater than it really is, consequently, the speed of translation of a star is seen as above-expected with the observed baryonic mass, providing the false impression that there is an extra, invisible matter responsible for the effect.”

    So practically the ‘Decreasing Space’ model suggests that in reality gravitational field shrinks objects/space!
    Thats really crazy!..thats exactly what my (also) 2016 Universe simulation/viz model is like, (decreased space) ie the ‘denser’ the space, energy wise / the stronger the gravitational field,..the greater the object/space contraction in that area of space!
    Funnily I was actually commenting on this model of mine on John’s BH article just couple days ago..excellent timing your post! Its amazing to see someone else having thought of a very similar universe model and also around the same time!
    Very interesting that such a model would alltogether get rid of the need for the existance of dark matter and dark energy!
    It all makes sense..

    1. John Duffield

      I’m afraid it doesn’t make sense Alan. If it did, it wouldn’t be the Shapiro delay. Light goes slower when gravitational potential is lower. That’s why optical clocks go slower when they’re lower. It’s as simple as that. When you work things through you’ll find dark matter and dark energy are simple too.

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