mirror matter

Mirror Matter is a theoretical concept in physics that suggests the existence of a parallel universe made up of a "mirror" version of our own universe, with its own set of particles and forces.

According to this theory, the mirror universe would be nearly identical to our own, with the exception that all the particles in it would have mirror counterparts with opposite charges.

The idea of mirror matter was first proposed in the 1990s as a possible explanation for the existence of dark matter.

Mirror matter would interact with regular matter only through gravity, which would explain why it has been so difficult to detect. While the existence of mirror matter is still purely theoretical, it remains an active area of research in physics.