The Mystery of Dark Matter

Delve into the enigmatic world of dark matter in this 30-minute educational video from the Perimeter Institute for Theoretical Physics. Explore the effects physicists observe on star velocities within galaxies, uncover current theories about dark matter composition, and learn about various experiments designed to detect dark matter on Earth. Begin with an introduction to the concept, then progress through methods of measuring celestial masses, including the Sun and galaxies. Examine evidence supporting dark matter's existence from Einstein's work, analyze failed hypotheses, and conclude with contemporary theories. Access additional educational resources, including a teacher's guide and modifiable worksheets, to enhance your understanding of this mysterious cosmic phenomenon.

Introduction
Measuring the Mass of the Sun
Measuring the Mass of a Galaxy: Orbital Method
Measuring the Mass of a Galaxy: Brightness Method
Evidence from Einstein
Failed Ideas About Dark Matter
Current Theories of Dark Matter