Photino

Okay kiddo, so let's talk about photinos. Photinos are a type of particle that scientists believe exist in the universe, kind of like stars and planets. Photinos are very special because they're a type of particle called a "dark matter particle". Dark matter is something that scientists can't see because it doesn't interact with light, but we can feel how it affects other things in space. It's like if you hide behind a curtain, no one can see you, but people can still feel that you're there if they walk into the curtain.

Now, photinos are part of a group of particles called "supersymmetric partners". These are basically like twins of other particles that we already know about, but they're slightly different. Think of them like how you have a shadow when you stand in the sun. Your shadow looks like you, but it's not exactly the same. Supersymmetric partners are like the shadow versions of other particles, and photinos are the shadow version of a particle called the photon.

Scientists think that photinos and other dark matter particles make up most of the matter in the universe. That means that even though we can't see them, they're all around us, holding everything together like glue. Without photinos and other dark matter particles, galaxies like our own Milky Way galaxy wouldn't be able to exist.

So, even though you can't see them, photinos are a really important part of the universe. They're like the invisible helpers that keep everything running smoothly!