Dark energy may already be solved, though based on an unknown
force, the force that does not pull, but pull along, a force that as
gravity sets matter into motion and bends light, the energy of
rotation.

Proof: Dark energy was found in spiral galaxies that rotate, but
was not found (or found in small amounts) in elliptic galaxies
that does not rotate, or gave only a small almost unnoticable disk
formation.

So heavily rotating galaxies, spiral galaxies were shown to have
significant dark energies.

Once a galaxy orbits, energy is built up to pull mass along its
orbit. The answer is space inerts. It is not matter that pulls,
but space flows. The galaxy also has a weight and combined
rotation. Space sets any matter into motion toward the galaxy's
rotation. The effect of a galactic weight rotating is that dark
energy arises, the gravity of rotation.

This dark energy effect does not explain why the Universe expands.

However the answer is close. The expansion has to do with
the dynamics of whirling systems. A whirling system gains its
own speed after formation like hurricanes. Spiral Galaxies
become like accelerating trains in space and the effect is
an inflation. This theory proves the big bang, that spiral galaxies
are accelerating in all directions due to having been formed
after the big bang and are still accelerating, gaining their own
momentum.

So I am pretty certain, that the disk formation is what gives rise to
dark energy, particularly because it rotates. Overall its a large
weight that sets into rotation, corresponds with gravity that
pulls along, and as that, as gravity that sets matter into
motion, bends light due to this dark gravitational force that
spiral galaxies carry. It is not matter that needs to be saught,
but that the weight of a galaxy moves alltogether, and this
effect bends light.

Cancel this theory. Its part of the General black hole theory I
posted after this thread.