Whereas Dark Energy is a dated modern myth, fueled by improperly attributing gravitational acceleration toward the region beyond the outer borders of our visual universe to a mythically growing expansive force, Dark Matter is generally recognized to be a real entity.
It seems the best that science can do about Dark Energy is to build ever larger telescopes to more accurately measure the acceleration phenomenon. But that's akin to more accurately measuring an accelerating object as it approaches Earth, while hypothesizing that a mystical force is pushing that object toward Earth at increasing speeds.
In science good hypotheses need to be testable, coherent, logical, and parsimonious. What Dark Energy thesis even remotely approaches this standard? On the other hand, there are stronger hypotheses surrounding Dark Matter, because of its relationship with baryonic matter. The only problem is that we can't yet directly see it, and haven't a clue what it really is. There has been no logical parsimony, until now.
If there is such a thing as a primary particle or force, which can lead to a Grand Unified Theory (GUT), or a Theory of Everything (TOE), then we should find the primary element deeply involved in every phenomenon.
It is interesting that gravitons resonate with classical Newtonian physics, quantum physics, and General Relativity. The formulas and expressions are different, but the existence of graviton flows helps explain certain quantum measurements, and force at a distance. Nothing else in testable science comes close to this versatility.
It is said that General Relativity works on the macro scale, while quantum physics measurements work best on the nano scale. Actually, the sloping curves associated with GR work equally well in all scales. Newton's formula for gravity could be expressed as follows: Every point mass attracts every other point mass by a force along the line intersecting both points. This force is proportional to the product of the two masses, and inversely proportional to the square of the distance between them. This formulation has been refined to express the gravitational relationship between the centers of two masses, and further refined by the concept of curved space.
Dark Matter was indirectly measured by its gravitational effects on nearby galaxies and galactic clusters. The outward regions of many spiral galaxies revolve around their core faster than expected without "something" outside the visible galaxy adding mass to the mix. That unknown became known as Dark Matter. Subsequently, immense blobs of dark matter have been detected throughout the known universe, not always associated with individual galaxies. What is going on?
As I have previously explained, the bubble universe within which we reside is just one of many within what is known as the Multiverse. Individual bubbles are appearing via their big bangs; growing, and then dissipating to form matter for subsequent bubbles. The macro picture might look somewhat like bubbles in a bathtub, but the overall process takes place over many billions of years.
As the shock wave from a local big bang expands outward, the remnant population of black holes, neutron stars, red and white dwarfs, failed stars, and dark matter patches tends to remain in the same space as before. The new universe also creates many new black holes and other long-lived phenomena. However, without so many pre-existing black holes and patches of Dark Matter, our visible universe would have fewer spectacular galaxies and galactic clusters.
So what indeed is Dark Matter? Dark Matter is omnipresent within the Multiverse. It exists within and without individual bubbles. It is a gravity well of curved space primarily composed of gravitons. There are also lepton elements therein (such as electrons, muons, and neutrinos), whose diffuse motions help stir the dark blob. A roughly similar model would be Brownian motion. It may be possible to detect other residents of Dark Matter before we find a way to directly detect gravitons. Dark matter blobs have irregular shapes because they are not sufficiently dense to form spheres.
If there are Dark Matter blobs beyond the Multiverse's boundary, then it may be that most random energy outwardly beyond the active region near the MV boundary could eventually be captured by these gravity wells. If so, there could develop even farther beyond the boundary of the MV a virtual void without limits, wherein only some random energy dwells eventually dissipating outward into a nearly perfect void.
In the spirit of infinity analysis, there is no logical imperative forbidding additional multiverses in the multitudes sufficiently spaced apart. We humans can never see all this glory with our eyes, but we can attempt to perceive it with our mind's eyes. Only an omnipresent omniscience could both see and perceive. As we humans learn more about gravity and Dark Matter, so shall we become further enlightened.