How Does This telescope can see back in time Work?

This telescope can see back in time because it looks at light that has been traveling for a very long time.

Imagine you're sitting on a bench outside your favorite ice cream shop. You see someone walking by, and they wave at you. That wave reaches you right away, but what if that person was far away, like across the street? The wave would take a little longer to reach you. Now imagine that person is very far away, like on another planet. The wave might take years, or even hundreds of years, to get here.

That's kind of how this telescope works! It looks at light from stars and galaxies that have been traveling for a long time, sometimes billions of years! So when the telescope sees those lights, it’s like seeing what those stars and galaxies looked like a very long time ago.

Think of this telescope as a special kind of time machine, but not one you ride in, it's one that uses light to show you the past. It doesn’t need magic; it just needs time and space!