Dark matter;The petri dish of the Universe

Hello,
I've recently being pondering an idea about dark matter and its effect and if you have the time to read it I would much appericate your opinion. I'm a member on this site a long time now and have alway found it brilliant for info so thought i'd post this hear and see how many laughs I get.

When I think of particles of Dark matter I think of their behavior much like living cells. As particles of dark matter interact with each other they multiply. This is a constant. Think of popcorn in a bag in the microwave.As the bag fills it expands. As the dark matter particles multiply the universe expands. Galaxies have being recorded to be traveling away from us in all directions due to propulsion from The Big Bang, now I'm not saying The Big Bang did not occur I'm saying the reasons Galaxies are moving from earth in all directions could be down to expansiion from multiplication. I see particles of Dark matter and particles of mass much like oil is to water. One of the fundamental rules of there relasionship is they do not mix.The electromagnetic force is the force that all particles of mass have in common which particles of dark matter do not react to.This is what keeps them apart much like the electron and the atom.
As the Universe expands due to multiplication, an outward pressure is being excerted on the outer reaches of the Universe. This pressure is felt equalily throughout the Universe resulting in the force we know as gravity.I like to think that the apple was pushed from the tree not fell. This pressure is a constant as I said multiplication of dark matter is a constant.The relasionship between particles of dark matter and particles of mass plus the constant force(pressure) being applyied from all directions from multiplication results in circular forms i.e the earth. Pressure as we know it generates heat but pressure from or generated by dark matter creates cold. The colder the area of space, the greater the density of dark matter.

I'm just looking for peoples idea's on my taughts. I'm hoping to do science in maynooth this year so don't be to harsh.Enstiene said that knowledge is limited but imagination can go around the world.

thanks for reading if you bothered to come this far. if ya left a reply, thanks
Karl

Hmm, right well my problem with your idea is the fact that you can't just have dark matter being created out of nothing. The energy in the universe is finite and new particles need to be created as a result of energy conversions/collisions. Also, by the fundamental laws of thermodynamics, the universe will eventually stop growing and no more energy will be used/converted and the universe will freeze as there's no more energy. How would you translate this into dark matter?

On your thought that the apple was pushed down rather than by gravity; how does dark matter interact with the apple? Also how does it not interact with other things in space? Thirdly, how is dark matter responsible for the various different gravitational forces felt between, well, everything?

Now, to be fair I'm not saying that you're 100% wrong but if you happened to be correct then all of modern and classic physics would need to be rewritten. For me, I find your idea to be extremely implausible and some parts don't make physical sense with regard to the accepted physics at the moment.

Great to hear you're looking to study Science! - I'm currently studying Science (Maths and Physics) in UCD.

I am intrigued by this aswell but I don't have any degree in physics or anything but the main problem in my opinion would be:
Dark matter is mainly responsible holding all the galaxies in place by giving that missing mass.and if it would multiply like "popcorn" we would get even more mass hence the galaxies wouldn't be "flying" away but would be drawn to each other by even stronger gravity.
Dark energy was created to account for expansion of the universe and in my opinion couldn't be associated by mater or dark matter as it should have much stronger effect then gravity.but who knows?
Like I mentioned I don't have any degrees whatsoever but I was reading lots if different books about astrophysics etc.if you like I can give you one written by Neil degrassi Tyson : " death by a black hole" if you haven't read it yet.well worth a while and there is a section about dark matter and our understanding of it.

conor-figgy wrote: Hmm, right well my problem with your idea is the fact that you can't just have dark matter being created out of nothing. The energy in the universe is finite and new particles need to be created as a result of energy conversions/collisions. Also, by the fundamental laws of thermodynamics, the universe will eventually stop growing and no more energy will be used/converted and the universe will freeze as there's no more energy. How would you translate this into dark matter?.

I have a simple question if you wouldn't mind answering..

If matter normal or dark cant be created out of nothing. Then where did it all come from?
As I understand it, Before the big bang there was no time, and without time there cant be anything, Because there is no before...

Well... Is The Big Bang in general not the "proof" that matter spontaneously generates, right? i am aware that matter did not appear straight after the big bang until the universe cooled to a low enough temperature for protons, neutrons, and electrons to form and remain stable. but in essence the whole universe came from nothing....


I think?
one very confused man. :gramps:

Helios wrote: I have a simple question if you wouldn't mind answering..

If matter normal or dark cant be created out of nothing. Then where did it all come from?
As I understand it, Before the big bang there was no time, and without time there cant be anything, Because there is no before...

Well... Is The Big Bang in general not the "proof" that matter spontaneously generates, right? i am aware that matter did not appear straight after the big bang until the universe cooled to a low enough temperature for protons, neutrons, and electrons to form and remain stable. but in essence the whole universe came from nothing....


I think?
one very confused man. :gramps:

Our universe is thought to have begun as an infinitesimally small, infinitely hot, infinitely dense, something - a singularity. Where did it come from? We don't know. Why did it appear? We don't know.

Karl

Very best wishes in pursuing science at Maynooth.

Cosmology is a difficult subject in my view. In broad concepts it's actually okay but the more you delve into it it challenges our common-sense view of things as we have to think across vast sweeps of time the deeper we observe. Also it raises profound questions of our origin and destiny as well as thinking about things we can't (haven't yet) examined in the lab (eg dark matter and dark energy).

By all means use your imagination to fill the gaps that you do not yet have the facts or training - but pursue more of what is known and documented. Blue-sky thinking is what brings bold new knowledge onto the plate of humanity. But beware of attempting to replace accepted documented evidence-based knowledge with imagination alone - there lies monsters and crack pots.

As has been pointed out by Nero - dark matter has mass and hence gravitationally interacts with the rest of matter in the usual way. The forces are attractive and not repulsive. This gravitational interaction is the only interaction that we know of. We are not aware of any interaction with electromagnetic radiation (hence the name dark matter) so this matter cannot lose energy through black-body radiation and I believe (but can't back up) that that means it tends to remain at the periphery of galaxies and there it affects the spin-rate of galactic arms in a manner that is not consistent with the spin rate judged by the visible matter alone. That, and gravitational lensing are the two main bodies of evidence for its existence.

Dark energy - there is published evidence that it is increasing the Hubble expansion rate (and a recent Nobel prize). I can't comment on that at all.

Matter coming from nothing - maybe the question should be - is there such a thing as nothing? I don't mean to be philosophical but terms like "quantum froth" comes to mind.
Hawking radiation - nothing can escape from a black hole - yet they "evaporate" as matter in the form of electron-positron pairs can spontaneously generate on or about the event horizon and where one particle escapes mass is lost from the black hole. That matter is from something - but if matter can't escape... what is nothing?

Be very very wary of any proponent of - and the phrase is oft used - "push gravity". Without supporting evidence this is best regarded as "here lie dragons".

With regards to the expansion of the universe - do note that it is space that is expanding - things are not being repulsed and recession due to expansion is not movement through space - this is a very common misunderstanding and you are likely to come across it (even in academic text books). It makes a big difference to the physics (correct interpretation allows for recessional velocities greater than the velocity of light - because they are not really moving through space - they're moving with space).

Best regards (and I am not qualified to say what I did - I dropped out of an Astrophysics degree after year one in the eighties and went into computing).

Mark C.