What If Dark Matter Is Just Black Holes?

The video explores the hypothesis that dark matter could be composed of black holes, specifically primordial black holes formed in the early universe. It discusses the challenges of this theory, including the need for black holes to be abundant and spread out like dark matter. Various methods, such as microlensing, are used to test this hypothesis by ruling out certain black hole masses. The video concludes that while black holes are unlikely to account for all dark matter, the search for its true nature could lead to new physics.

What is dark matter and how is it detected?

Explain the relationship between black holes and dark matter.

Describe the process by which black holes form from massive stars.

Discuss the significance of the cosmic microwave background in understanding dark matter.

What are primordial black holes and how might they relate to dark matter?

What are the potential consequences of having a high abundance of primordial black holes?

What are the implications of black holes being too massive or too small in the context of dark matter?

How do gravitational lensing and microlensing contribute to the search for dark matter?

How does the study of dwarf galaxies help in understanding dark matter?

What evidence suggests that black holes cannot account for all dark matter?