Dark matter

What is Dark Matter?

Dark matter is a special kind of stuff in space that we cannot see. It is very important because it helps hold the universe together. Even though we can't see it, we know it is there because of how stars and galaxies move. They move faster than they should if only the things we can see were holding them together.

Why Do We Need Dark Matter?

Dark matter makes up most of the mass in the universe. It is about 85% of all the mass, while the things we can see, like stars and planets, are only about 5%. Without dark matter, galaxies would fly apart because there isn't enough gravity to keep them together. Scientists study dark matter to learn more about how the universe began and how it changes over time.

How Do Scientists Search for Dark Matter?

Scientists think dark matter might be made of tiny particles that we have not discovered yet. Some ideas include particles called weakly interacting massive particles (WIMPs) or axions. Others think it could be made of very small black holes that formed soon after the Big Bang. Scientists use special tools to look for these particles, but it is still a big mystery.

Fun Facts About Dark Matter

• Dark matter does not interact with light, which is why we cannot see it.
• It affects the way light from distant objects bends, a process called gravitational lensing.
• Studying dark matter helps scientists understand the structure and evolution of the universe.