Fun Facts About Dark Matter

Fun Facts Daily · May 12, 2026 · 14m

Dark matter constitutes approximately 27% of the universe, significantly outweighing visible or baryonic matter, which accounts for only 5%. While baryonic matter consists of the protons and neutrons that form stars, planets, and living organisms, dark matter remains invisible because it does not absorb, reflect, or emit electromagnetic radiation. Its existence was first theorized in 1933 by astronomer Fritz Zwicky, who observed that galaxies within the Coma Cluster moved at speeds that should have caused them to fly apart based on visible mass alone. This led to the conclusion that an unseen…