Yes, but it was Einstein's imagination that provided the theoretical framework that allowed the longstanding physical measurement to line up. If his imagination was limited by Newton's laws, he would have never come up with GR. If he had said that mass causes time to vary, he would have been laughed out of the room, with much ad hominem shouting.

What I'm saying here is that we need to push beyond our current scientific paradigms to find out how these inexplicable corner cases actually work. As well, I do realize that the depth of exploration required will be further than most people are willing to plumb, which is demonstrated by the in-their-feelings reactions to my ideas.

5/6ths of the universe's matter is missing, or thereabouts. That fact aligns with there being six vibrationally distinct dimensions in our 3-space (our physical dimension being just one of them, our soul inhabiting its counter-dimension, all things in our universe having been created in pairs). The matter/energy from each dimension are distinct, so we can't detect the others using instruments made with ours, yet -- somehow, I don't know how -- the mass combines to contribute to the gravitational inertia that keeps the galaxies from flying apart.

That said, when we slam particles together at high enough energies, we do see crossover (briefly) in the form of anti-particles. I couldn't begin to explain the mechanisms behind this, but the structure can be known to seekers of compassionate existence. This is also a hint to the solution to the question of why, after the Big Bang, we don't have an anti-matter left; the answer is that it's where it is, but that we can't detect it with our current tech (or maybe any tech, for all I know).

The universe was made to be known by we human beings, we being the information processors designed to work in harmony with this information-theoretic universe, which is fully queryable by a suitable trained mystic.

A Sufi Murshid (teacher) lived his entire life in a single town that consisted of a single pair of roads that met in the center of town. Late in his life, he stated that, he "knew the stars of the Milky Way better than he knew his town". (A love-consumed mystic remains conscious as our souls leave our bodies when we sleep. What is called astral travel is not limited by our physical body's speed laws; it is bounded only by the "speed of thought".)

Sufi stories are glimpses of corner cases meant to spur us to push past our "known" boundaries. We need to get this world at peace before we can explore our advanced abilities. As Louis Armstrong said, "If lots more of us loved each other, man, this world would be a gasser!"