Okay kiddo, let's imagine you have a big room and you need to show where things are inside it. You can use a map to show where everything is, right? That map would be like the position space!
In science, position space is used to show where particles (like atoms or electrons) are in the room we call the universe. Scientists use mathematical equations and graphs to show where the particles are and how they move around. It's like making a map of the room but instead of objects, we're tracking tiny particles!
So, position space is just a way for scientists to keep track of where things are in the universe using mathematical equations and graphs. Pretty cool, huh?