Dark photon

Okay kiddo, imagine that there are tiny particles called photons flying around everywhere. They are like little packets of light that zip around really fast.

Now, usually we can see these photons because they interact with matter and create the light that we can see. But there is a type of photon called a dark photon that doesn't really interact with matter, so we can't see it. It's like a ghost photon that is there, but invisible.

Scientists think that dark photons might exist because they could help explain some weird things that we see happening in the universe, like how some things seem to have more mass than we can see.

So, even though we can't see them, scientists are trying to find ways to detect these dark photons and learn more about them. It's like trying to find a needle in a haystack, but if they can find it, they might be able to solve some big mysteries!