Anti-matter has Anti-Gravity
How do I know this? Because of the unexplained fountain of positrons in the center of our galaxy. This theory would also account for a lot of other mysterious phenomena, including the jets that emerge from the poles of quasars, and the decline in the number of quasars over the last billion years, and even “dark energy.” Although that last one is a mere possibility, not a prediction.
As matter enters a black hole, such as a quasar, or the one at the center of our own galaxy, it is traveling very fast in a circular path around the edges of the interior of the black hole. It is likely to collide with other particles, sending them intoward the center of the black hole, picking up energy. It will shed this energy as pairs of particles and anti-particles. If anti-matter has anti-gravity, the anti-particle will be accelerated away from the center and emerge from the pole.
We have all been brainwashed by the dogma that anything can enter a black hole but nothing can come out. Not true if my thesis is correct. Thus the fountain of positrons. Whether anti-matter has anti-gravity is impossible to check in the laboratory because of the enormous gap in the order of magnitude of the EM force and the gravity-antigravity force.
Quasars were common in the youth of our universe. They could easily produce both positrons and anti-protons, which would combine as neutral anti-hydrogen atoms. Anti-matter does not clump by gravity. Instead it spreads itself out as much as possible. This could form the interior of the vast voids we see in the soap-bubble structure of the universe. This repulsive force accelerates the Hubble expansion, but that is only a temporary effect. Quasars have died out. The random mixing of matter will gradually reduce the anti-matter, and ordinary gravity will resume the dominant role.
~~Dr. H.