The Aether is a medium of heat, not conventional EMR heat, but heat like that at the center of the Earth, heat I call nucleus heat. The heat originates at the nucleus and puts a density/ temperature on the Aether. Perhaps the background temperature of the universe is from a nucleus to the universe and all atom's and universe's are the same. The squeezing force of the nucleus inner heat creates a field of density on the Aether and makes its gravity field. When two gravity fields touch the density in the Aether at the point where the fields touch pulls the two object's together.
Energy like matter is also made of the background Aether heat medium. Energy is just heat on the Aether spreading to colder less dense parts of the Aether.
Time dilation causes the nucleus to heat up and make its electron shell denser with heat and slower to function. It occurs when a large Earth like gravity field pressurizes an atom's own gravity field in on itself, or when a nucleus moves through the universe it continuously enters new cold Aether and the same type of pressure that is caused by Earth's gravity is experienced.
Movement in our universe that causes time dilation is relative to our universe. If our universe is an atom and it has a nucleus, and all universe's are like this, then the temperature that exists all through infinity comes from gravity field created by a nucleus. The smaller and more you divide the nucleus the hotter it gets. Time dilation heat on the nucleus would be fairly cold compared to how hot the nucleus is. Coincidentally movement in our universe is to small to have an impact on the outside universe our universe is an atom to.
A magnet is like a fan where to fans facing each other would display the same repulsion as two north ends of a magnet. The medium for the magnet is again Aether heat. The magnet doesn't heat up as it is the same temperature as the Aether it is sitting in.