Do you know what a compass is? It's a tool that helps people find which way they need to go, like when you're lost in the woods. But do you know how a compass works? It works by pointing to the North Pole. That's one of the two ends of the Earth's axis, like a stick that goes through the middle of the Earth from the North Pole to the South Pole.
Now, if you look up at the sky at night, you might be able to see a special star that doesn't move. It's always in the same spot, no matter what time of night or what day of the year it is. That star is called the pole star, or Polaris. It's very special because it's always right above the North Pole of the Earth.
So, if you're lost in the woods and you have a compass, you can use it to find the North Pole by following the direction the compass needle is pointing towards. Then, you look up at the sky and find the pole star, since it's always above the North Pole. With the pole star and your compass, you can figure out which way you need to go to get back home!