HEP Theory2026-07-241 minarXiv:2607.22354expressMirror Matter: The Dark Twin of Our WorldThe Standard Model of particle physics is a catalog of all known building blocks of the universe: electrons, quarks, and others. But it is silent about dark matter and doesn't get along with gravity.Loriano Bonoragravitational lensingCPT theoremAdam RiessAlan GuthAlbert Einsteindark mattergravityquantum gravitydark photonspacetime curvature👍👎☆SimplePopularAdvanced