Imagine the universe is a giant box that is very, very big. And that box is called the Milky Way. The Milky Way is full of stars, planets, and other cool things that we can see with telescopes.
Now, imagine that the Milky Way box is divided into four equal parts. Each part is called a quadrant. Think of it like a pizza that is cut into four slices.
In each quadrant of the Milky Way, there are different stars and planets. Some might be similar to each other, but some might be very different.
Scientists use quadrants to help them study and explore the Milky Way. It's like they're looking at each slice of pizza to see what toppings are on it. And by studying each quadrant, scientists can learn more about the different parts of our galaxy and how they work.