Galactic coordinate system

The galactic coordinate system helps us to locate stars and other objects in space. It's like an invisible grid that we use to point to things in the night sky. Imagine a huge invisible sphere in the sky with lines criss-crossing it. Every point in the sky is assigned a number, so if you know the numbers, you can find your way around the night sky. The center of this sphere is the center of our galaxy, which is in the same direction as the constellation Sagittarius. The lines run north-south (the "latitude") and east-west (the "longitude"), and the numbers go from 0 to 360. So, if you have a map of the night sky and some numbers, you can find your way around!