My latest theory of the Universe

All closed systems accelerate.

Spiral galaxies are gaining speed on their tracks. Not the spiral
galaxy
but the black hole in it's center. The spiral galaxy itself is a
closed
system (where energy feeds itself and accelerates in power).

Many spiral galaxies will collide before their black hole accelerates
to c. After a collision of two spiral galaxies, and elliptic galaxy
tends
to form rather than the two galaxies uniting. Currently 70 percent of
the galaxies are spiral galaxies. The black hole in the galaxy's core
is united with the galaxy. After a collision of two galaxies the two
central black holes escape. At that point the black holes are
accelerating
faster as closed systems on their tracks. Eventually a black hole
will move through space at near c velocity and explode (big bang).

The black hole traveled very far from it's mother big bang.

The Universe expands (spreads) and explosions occur, like winds
that carry a certain tree's seed far away, great explosions happen
when space-time curves with a black hole's speed and the Universe
as Einstein explained warps, a black hole and all the energy inside
turns inside out.

Only a few spiral galaxies will be able to accelerate to near c
speed without colliding, but the collision helps to rid the black
hole of it's galaxy, after which if no matter winds around the
black hole to form a new galaxy, as a closed system it propells
toward it's road ahead, toward reaching a boiling point between
gravity, velocity, space and time. Unlike hurricanes in our
atmosphere that run as closed systems that feed on their
own energies and surge to immense powers as a result,
in space a closed cyclone has no atmosphere to slow propulsion
and acceleration all the way toward c.

Of course this explanation also explains why the Universe is
expanding, since galaxies (and black holes) are gaining speed
on their tracks like trains, giving the illusion that the Universe is
expanding.

Dark energy is propelling gravitational forces that arise in closed
spiral galactic systems.

Yes, dark energy is a propelling quality that exists powerfully
with spiral galaxies and hardly if any is found in elliptic galaxies.