Okay kiddo, so you know that everything in the universe is made up of tiny little things called atoms, right? Well, scientists have found out that even those atoms are made up of even tinier things called subatomic particles.
Now, some really smart scientists have been studying these particles and they came up with a theory called supergravity. This theory helps explain how these particles interact with each other and how they make up the universe we live in.
One specific type of supergravity is called n=8 supergravity. This means that it follows a certain set of rules that make it really special. Just think of it like a game that has eight specific rules you have to follow to play it.
This type of supergravity is really important because it helps us understand things like black holes and other things in the universe that we can't see with our eyes. Scientists use equations and formulas to study n=8 supergravity and figure out how the universe works.
So, to sum it up, n=8 supergravity is a special type of theory in science that helps us understand how tiny particles make up everything in the universe and how they interact with each other.