Dark matter

Dark matter is one of the greatest mysteries in modern science.
Although it cannot be seen directly, scientists believe dark matter makes up a large portion of the universe and plays a key role in how galaxies form and move.

This video explains what dark matter is, why scientists believe it exists, and how it influences the structure of the universe.

▶ Topics covered:

What dark matter is

Why it cannot be seen

Evidence from galaxy movement

Its role in the universe