Question about dark matter.

We know space is expanding at an accelerating rate between objects that are at a great distance from each other. We also believe that dark matter keeps the stars in a galaxy from being flung out into intergalactic space.

My question is, could it be that the metric expansion of space, combined with gravity, is what actually keeps the stars in a galaxy from not being flung out into intergalactic space? Do formulas discount this?

It's gravity that keeps galaxies together. Is that what you're asking? Perhaps dark matter accounts for the gravity needed to keep galaxies together.

reply to post by Toromos


So you're saying that gravity could be dark matter since the graviton has not been observed yet. Is that what you're saying?

reply to post by smithjustinb


They don't really know anything about the universe dark matter is a hypothetical place holder to describe an unseen force they dont understand in order to discover what it really is that exist in empty space.

Think further outside the box and incorporate consciousness into the observation of what it is that composes the "space" between things and the ulterior forces of matter that essentially hold it all together.

reply to post by Toromos


Gravity is an unknown.

Gravity could be something completely out of our realm of understanding as we know things to exist.

Hell for all we know when we discover what it really is it may change everything but who really knows?

I know none of us really do.

reply to post by onequestion


Interesting concept. I never thought about it that way.

reply to post by brazenalderpadrescorpio


Of which observation?

reply to post by onequestion


Have you ever read what the Ra material says about spiritual mass? It's really interesting.

reply to post by onequestion


Your observation that consciousness could be dark matter. I find that concept intriguing.

reply to post by brazenalderpadrescorpio


I don't think I'm saying that. From what I understand dark matter is a form of matter that we have not been able to detect. Because it is matter, however, it does create gravitational attraction like visible matter. It's my understanding that dark matter is currently needed as a hypothesis precisely because the visible matter that we can see cannot account for various instances of gravitational attraction, especially at the large scale of galaxies attracting each other in galaxy clusters.

smithjustinb
My question is, could it be that the metric expansion of space, combined with gravity, is what actually keeps the stars in a galaxy from not being flung out into intergalactic space? Do formulas discount this?

The metric expansion of space makes things appear to fly apart.

You seem to be asking if this property of space that makes it look like things are flying apart is what's causing the stars in a galaxy to not be flung out into intergalactic space?

Or did I misunderstand the question?

You said "combined with gravity", so if we ignore the metric expansion of space and this "combined with" part of the question, yes it's thought that gravity is what keeps the stars from being flung off. If not gravity from dark matter, maybe some kind of modified gravity theory might explain the galactic rotation curves, but those modified gravity ideas have some problems with explaining the bullet cluster observations.

reply to post by Toromos


Do you think it's possible that dark matter could be the graviton?

People suppose dark matter because more gravity is needed in the galaxy to overcome the centrifugal force of the galaxy's rotation than is observed in regular matter. The matter that we see does not have enough mass to overcome the centrifugal force of the galaxies rotation in order to stay in tact, so scientists came up with dark matter as a way to explain it.

My question is, "Could the metric expansion of space supplement dark matter as an explanation."

reply to post by brazenalderpadrescorpio


They dont understand the "forces" and how they tie together. I dont either but im at least willing to admit the truth which gives me an edge against my competitors.

Theoretically speaking maybe consciousness isnt exactly dark matter but its not not dark matter either.

What force ties it all together and makes it observable to whatever is experiencing it?

Don't you think its funny how everything follows a set of rules, almost like there's an authority governing the rules of the universe?

reply to post by brazenalderpadrescorpio

Do you think it's possible that dark matter could be the graviton?

Do you think its possible that sound has something to do with gravity?

smithjustinb
My question is, "Could the metric expansion of space supplement dark matter as an explanation."

No it's exactly opposite of what's needed for an explanation.

Metric expansion of space explains why things seem to be flying apart. We need the opposite effect, some kind of explanation of why stars are NOT flying apart in galactic rotation

reply to post by brazenalderpadrescorpio


I don't think so. The graviton is a hypothetical particle that explains the force of gravity from a quantum mechanical point of view. It is a force mediating particle. It would therefore be massless, similar to photons as being the force mediating particle for the electro-magnetic force. Dark matter has mass, and thus would interact with gravitons. We just can't detect dark matter at this point, but only observe it's gravitation effects on other visible matter bodies.

reply to post by Arbitrageur


We don't know enough to know weather or not there is literally a metric expansion of space or not.

Their just observations...

Ok ok, calculations but we have no idea what were looking at to be perfectly honest. Its ALL hypothetical.

I thought gravity was caused by the twisting of time space by massive objects. That's always been my understanding.

I actually like the thought that the expAntion of the universe causes an opposing contracting force. That we register as dark matter... Hell that might fix the problem with both dark matter and energy.

reply to post by Toromos


Show conclusive evidence to support your claim that dark matter has mass and how they discovered it.