Okay kiddo, have you ever seen something that is really, really black? It almost seems like it sucks up all of the light around it and makes everything else look brighter in comparison? That's called "super black."
Super black is a type of material that scientists have created to absorb as much light as possible. It's made up of tiny little bumps and grooves that help to scatter or trap the light that hits it. Imagine a piece of paper covered in tiny little mountains and valleys. When light hits it, some of the light gets stuck in the valleys and can't escape, which makes the paper look really, really dark.
Scientists use super black materials for a lot of different things. Sometimes they use them to help block out light when they're trying to take really sensitive measurements or pictures. And other times they use them to make things like telescopes or solar panels work better.
In short, super black is a really cool thing that scientists have made that absorbs a lot of light and makes everything else look brighter!