dark energy is being understood some what, it has an opposite charge and therefor can not interact with standard energy, dark energy comes from dark matter (so they think) which would explain it. It can not bond so it clusters and causes what we now call dark energy. (all mass causes gravity, even if the mass is not "solid" so enough dark matter/energy will create alot of gravitational forces. We are so use to seeing planets and structures that we don't consider the possibility of matter not being able to bond so no dark matter structures can exists. Meaning no dark matter planets can exist. We are left with alot of matter and energy that if pulling things close. (thats how it was detected and the total matter we can see can not produce enough gravity to keep the milkyway together.) that leaves an obvious conclusion and that is. all the dark energy and matter that is left will pull its self together but it will not bond together. The only effects it has is gravitational and energetic properties. We can use it for energy and maybe one day to warp space-time so we can travel across vast distances in space. Apart from that its basically the glue for the galaxies. Awesome post bro!!!