Dark Matter Here

The exact identity of dark matter remains unknown, though several leading theories exist: The quest for dark matter with Matt Bothwell

As early as the 1930s, Swiss astronomer Fritz Zwicky noticed that galaxies in the Coma Cluster were moving far too fast to be held together by visible matter alone. He coined the term "dunkle Materie" (dark matter) to describe the missing mass. Gravitational Lensing Dark Matter

Dark matter makes up roughly , dwarfing the "ordinary" matter—stars, planets, and people—which accounts for less than 5%. The exact identity of dark matter remains unknown,