How We Know The Universe is Ancient?

The universe is really old, like super old, and we can figure out how old it is using clues from space.

Imagine you're playing a game of hide-and-seek with your friend. When they count to 10, they look for you. But if you were super far away, it would take longer for them to see you, like if you were hiding behind a big mountain or on another planet.

Scientists use something similar. They look at stars and galaxies, which are like distant friends in the sky. By studying how light from these faraway places travels through space, they can tell how long it has been since those stars and galaxies started shining, kind of like counting to 10 but for billions of years!

Think about blowing up a balloon with some dots on it. As you blow it up, the dots get farther apart, just like galaxies in our universe.

By watching how fast galaxies are moving away from each other, scientists can tell how long ago everything started, kind of like knowing how long it took to blow up that balloon! This helps them guess that the universe is about 13.8 billion years old, which is way older than you or your toys! The universe is really old, like super old, and we can figure out how old it is using clues from space.