Cosmology2026-01-041 minarXiv:2601.01340expressDark matter isn’t so cold after allThe enigma of dark matter was already studied by Fritz Zwicky and Vera Rubin. For decades, it was depicted as a cold, listless skeleton that only draws galaxies together.Hao Xu·Xinhe Menggravitational lensingAdam RiessAlan GuthAlbert Einsteindark matterdark energymodified gravitycosmological constantdark photon👍👎☆SimplePopularAdvanced