Dark Matter is Slowing Down the Milky Way

The video explores the complex dynamics of galaxies, focusing on the Milky Way's Galactic bar and the Hercules stream. It explains how dark matter influences these structures, causing the Galactic bar to slow down by 24% since the Milky Way's formation. The video delves into angular momentum, star composition, and metallicity to understand star movements. It introduces a new method for studying dark matter's effects on galactic dynamics, offering insights into the universe's structure.

What is the significance of dark matter in the movement of galaxies?

How does the Galactic bar affect the Hercules stream?

Explain the relationship between angular momentum and the motion of stars in the galaxy.

What method did researchers use to study the stars in the Hercules stream?

What conclusions did the authors draw about the slowing down of the Galactic bar?