TED-Ed: Dark matter: The matter we can't see - James Gillies

The video explores the evolution of scientific understanding from ancient Greek theories of four elements to modern concepts of atoms, dark matter, and dark energy. It highlights Leucippus's atomic theory, the discovery of dark matter, and the accelerating expansion of the universe driven by dark energy. The video also touches on supersymmetry and string theory as potential explanations for the universe's composition, emphasizing the small percentage of the universe that is visible and understood.

What new insight or understanding did you gain from this video?